U24xx OBD-II Codes (U2400–U2499)

U2400 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2401 moderate

Fuel Injector Control Module — High-Speed CAN Bus "Off" (GM/Duramax)

U2402 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2403 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2404 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2405 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2406 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2407 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2408 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2409 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2410 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2411 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2412 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2413 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2414 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2415 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2416 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2417 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2418 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2419 low

Trailer Module Programming Fault (Mercedes-Benz)

U2420 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2421 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2422 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2423 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2424 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2425 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2426 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2427 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2428 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2429 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2430 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2431 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2432 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2433 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2434 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2435 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2436 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2437 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2438 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2439 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2440 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2441 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2442 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2443 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2444 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2445 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2446 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2447 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2448 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2449 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2450 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2451 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2452 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2453 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2454 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2455 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2456 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2457 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2458 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2459 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2460 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2461 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2462 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2463 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2464 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2465 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2466 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2467 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2468 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2469 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2470 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2471 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2472 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2473 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2474 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2475 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2476 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2477 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2478 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2479 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2480 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2481 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2482 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2483 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2484 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2485 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2486 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2487 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2488 critical

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2489 moderate

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2490 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2491 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2492 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2493 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2494 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2495 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2496 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2497 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2498 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information

U2499 low

Manufacturer-specific communication / control-module code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information