P0701 moderate

Transmission Control System Range/Performance

The P0701 code means the vehicle's onboard diagnostic system has detected: Transmission Control System Range/Performance. This is a moderate severity code.

My Garage →
Keep driving?
Short distances only
DIY difficulty
hard
Estimated cost
$150 - $800 (parts and labor)
Check Your Fluid First
ANCEL AD310 OBD-II Scanner

Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Read Transmission Codes
LAUNCH CRP123X (Reads All Systems)

Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Common Symptoms

  • Check Engine Light illuminated
  • Erratic or harsh shifting
  • Transmission slipping between gears
  • Vehicle stuck in limp mode

Probable Causes (Ranked by Likelihood)

  • Faulty transmission range sensor Very High
  • Low or contaminated transmission fluid High
  • Damaged valve body Moderate
  • TCM internal fault Low

Step-by-Step Diagnostic Procedure

  1. Check transmission fluid level and condition -- dark or burnt fluid indicates internal problems

  2. Read freeze frame data and monitor transmission sensor PIDs on a scan tool

  3. Inspect the transmission range sensor connector and wiring

  4. Perform a transmission fluid pressure test to check internal hydraulic function

  5. Check for TSBs related to valve body or TCM software updates

Frequently Asked Questions

Can I drive with code P0701?

Drive short distances only. Erratic shifting can cause further transmission damage. If the vehicle enters limp mode, drive directly to a repair shop.

What is the transmission control system?

The transmission control system includes the TCM, sensors, solenoids, and valve body that work together to manage gear selection and shift timing in automatic transmissions.

Is P0701 expensive to repair?

It depends on the cause. A sensor replacement may cost $150-$300, while a valve body repair or TCM replacement can run $500-$800 or more.

Sources

This page is built from documented references. Verify against your own service info before repair work.

Explore More

Search codes Vehicle-specific fixes Guides By make

Was this helpful?

Share carcodefinder.com with a friend who needs to decode their check engine light.

Browse by symptom → Read repair guides → Fixes by vehicle →