B03xx OBD-II Codes (B0300–B0399)

100 fault codes in the B03xx range. Click any code for causes, diagnostic steps, severity, and common fixes.

B0300 low
Driver Front Door Lock Actuator Circuit Malfunction
B0301 low
Passenger Front Door Lock Actuator Circuit Open
B0302 low
Left Rear Door Lock Actuator Circuit Short
B0303 low
Right Rear Door Lock Position Switch Fault
B0304 low
Liftgate Door Unlock Actuator Circuit Malfunction
B0305 low
Driver Front Door Lock Actuator Circuit Malfunction
B0306 low
Passenger Front Door Lock Actuator Circuit Open
B0307 low
Left Rear Door Lock Actuator Circuit Short
B0308 low
Right Rear Door Lock Position Switch Fault
B0309 low
Liftgate Door Unlock Actuator Circuit Malfunction
B0310 low
Driver Front Door Lock Actuator Circuit Malfunction
B0311 low
Passenger Front Door Lock Actuator Circuit Open
B0312 low
Left Rear Door Lock Actuator Circuit Short
B0313 low
Right Rear Door Lock Position Switch Fault
B0314 low
Liftgate Door Unlock Actuator Circuit Malfunction
B0315 low
Driver Front Door Lock Actuator Circuit Malfunction
B0316 low
Passenger Front Door Lock Actuator Circuit Open
B0317 low
Left Rear Door Lock Actuator Circuit Short
B0318 low
Right Rear Door Lock Position Switch Fault
B0319 low
Liftgate Door Unlock Actuator Circuit Malfunction
B0320 low
Driver Front Door Lock Actuator Circuit Malfunction
B0321 low
Passenger Front Door Lock Actuator Circuit Open
B0322 low
Left Rear Door Lock Actuator Circuit Short
B0323 low
Right Rear Door Lock Position Switch Fault
B0324 low
Liftgate Door Unlock Actuator Circuit Malfunction
B0325 low
Driver Front Power Window Motor Circuit Malfunction
B0326 low
Passenger Front Power Window Motor Circuit Open
B0327 low
Left Rear Power Window Motor Circuit Short
B0328 low
Right Rear Window Regulator Position Sensor Fault
B0329 low
Driver Front Power Window Auto-Down Circuit
B0330 low
Passenger Front Power Window Auto-Up Circuit
B0331 low
Left Rear Window Pinch Protection Sensor
B0332 low
Right Rear Power Window Motor Circuit Malfunction
B0333 low
Driver Front Power Window Motor Circuit Open
B0334 low
Passenger Front Power Window Motor Circuit Short
B0335 low
Left Rear Window Regulator Position Sensor Fault
B0336 low
Right Rear Power Window Auto-Down Circuit
B0337 low
Driver Front Power Window Auto-Up Circuit
B0338 low
Passenger Front Window Pinch Protection Sensor
B0339 low
Left Rear Power Window Motor Circuit Malfunction
B0340 low
Right Rear Power Window Motor Circuit Open
B0341 low
Driver Front Power Window Motor Circuit Short
B0342 low
Passenger Front Window Regulator Position Sensor Fault
B0343 low
Left Rear Power Window Auto-Down Circuit
B0344 low
Right Rear Power Window Auto-Up Circuit
B0345 low
Driver Front Window Pinch Protection Sensor
B0346 low
Passenger Front Power Window Motor Circuit Malfunction
B0347 low
Left Rear Power Window Motor Circuit Open
B0348 low
Right Rear Power Window Motor Circuit Short
B0349 low
Driver Front Window Regulator Position Sensor Fault
B0350 low
Driver Side Power Mirror Motor Circuit Malfunction
B0351 low
Passenger Side Power Mirror Vertical Motor Open
B0352 low
Driver Side Power Mirror Horizontal Motor Open
B0353 low
Passenger Side Mirror Fold Motor Circuit
B0354 low
Driver Side Mirror Heater Circuit Malfunction
B0355 low
Passenger Side Mirror Heater Circuit Open
B0356 low
Driver Side Mirror Heater Circuit Short
B0357 low
Passenger Side Mirror Turn Signal Circuit
B0358 low
Driver Side Mirror Auto-Dimming Circuit
B0359 low
Passenger Side Mirror Memory Circuit
B0360 low
Driver Side Mirror Puddle Lamp Circuit
B0361 low
Passenger Side Blind Spot Mirror Indicator Circuit
B0362 low
Driver Side Mirror Position Sensor
B0363 low
Passenger Side Power Mirror Motor Circuit Malfunction
B0364 low
Driver Side Power Mirror Vertical Motor Open
B0365 low
Passenger Side Power Mirror Horizontal Motor Open
B0366 low
Driver Side Mirror Fold Motor Circuit
B0367 low
Passenger Side Mirror Heater Circuit Malfunction
B0368 low
Driver Side Mirror Heater Circuit Open
B0369 low
Passenger Side Mirror Heater Circuit Short
B0370 low
Driver Side Mirror Turn Signal Circuit
B0371 low
Passenger Side Mirror Auto-Dimming Circuit
B0372 low
Driver Side Mirror Memory Circuit
B0373 low
Passenger Side Mirror Puddle Lamp Circuit
B0374 low
Driver Side Blind Spot Mirror Indicator Circuit
B0375 low
Driver Door Ajar Switch Circuit Malfunction
B0376 low
Passenger Door Ajar Indicator Circuit Open
B0377 low
Left Rear Courtesy Light Circuit Short
B0378 low
Right Rear Child Lock Actuator Circuit Malfunction
B0379 low
Driver Door Handle Switch Circuit Open
B0380 low
Passenger Door Module Communication Circuit Short
B0381 low
Left Rear Door Latch Assembly Circuit Malfunction
B0382 low
Right Rear Door Entry Keypad Circuit Open
B0383 low
Driver Door Puddle Lamp Circuit Short
B0384 low
Passenger Door Edge Protector Circuit Malfunction
B0385 low
Left Rear Door Check Strap Sensor Circuit Open
B0386 low
Right Rear Door Seal Heater Circuit Short
B0387 low
Driver Door Hinge Sensor Circuit Malfunction
B0388 low
Passenger Door Ajar Switch Circuit Open
B0389 low
Left Rear Door Ajar Indicator Circuit Short
B0390 low
Right Rear Courtesy Light Circuit Malfunction
B0391 low
Driver Child Lock Actuator Circuit Open
B0392 low
Passenger Door Handle Switch Circuit Short
B0393 low
Left Rear Door Module Communication Circuit Malfunction
B0394 low
Right Rear Door Latch Assembly Circuit Open
B0395 low
Driver Door Entry Keypad Circuit Short
B0396 low
Passenger Door Puddle Lamp Circuit Malfunction
B0397 low
Left Rear Door Edge Protector Circuit Open
B0398 low
Right Rear Door Check Strap Sensor Circuit Short
B0399 low
Driver Door Seal Heater Circuit Malfunction
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