Transmission Control System Range/Performance
What does P0701 mean?
The P0701 code means the vehicle's onboard diagnostic system has detected: Transmission Control System Range/Performance. This is a moderate severity code.
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
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Check transmission fluid level and condition -- dark or burnt fluid indicates internal problems
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Read freeze frame data and monitor transmission sensor PIDs on a scan tool
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Inspect the transmission range sensor connector and wiring
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Perform a transmission fluid pressure test to check internal hydraulic function
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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.