Throttle Actuator Control Module Processor
What does P2107 mean?
The P2107 code means the vehicle's onboard diagnostic system has detected: Throttle Actuator Control Module Processor. This is a critical severity code.
Common Symptoms
- Engine in severe limp mode
- Throttle unresponsive
- Multiple warning lights on dash
- Engine may stall or not start
- Check engine light on
Probable Causes (Ranked by Likelihood)
- Internal PCM/ECM processor failure for throttle control Very High
- PCM software corruption High
- Power supply issue to PCM (voltage spike or drop) Moderate
- Water damage to PCM or throttle control module Moderate
- Failed PCM reflash or programming Low
Step-by-Step Diagnostic Procedure
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Check PCM power and ground circuits -- verify stable 12V supply and clean grounds
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Attempt to communicate with PCM via scan tool -- if communication fails, PCM may be damaged
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Check for TSBs regarding PCM software updates for your specific vehicle
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Inspect PCM connector for water intrusion, corrosion, or bent pins
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If all circuits test good, PCM replacement and reprogramming may be required
Frequently Asked Questions
Can I drive with code P2107?
No. This code indicates a processor-level failure in the throttle control module, which means the PCM cannot safely control the throttle. The vehicle should be towed to a dealer or qualified repair shop.
Does this mean I need a new PCM?
Possibly. First verify that power supply and ground circuits to the PCM are correct. Check for software update TSBs. If the PCM hardware has failed internally, replacement is required. A new PCM must be programmed to your specific vehicle.
How much does a new PCM cost?
A new PCM typically costs $400-$1,000 for the part. Programming and installation add $100-$500 in labor. Remanufactured PCMs are available for some vehicles at lower cost. Dealer programming is usually required for the immobilizer/key system.