What Does P2107 Mean?
The PCM has detected an internal processor fault within the throttle actuator control module circuitry. This indicates a hardware or software failure in the control logic managing the electronic throttle system.
Safety Warning
Vehicle may enter failsafe mode with unpredictable throttle response or complete loss of throttle control. Do not drive as engine may not respond predictably to accelerator input.
Common Causes
40%
PCM internal processor fault or memory corruption in throttle control module
25%
PCM software corruption requiring reprogramming or update
20%
Low voltage condition or voltage spike damaging PCM processor
10%
PCM connector corrosion affecting processor power or ground circuits
5%
Water intrusion or physical damage to PCM causing processor malfunction
Diagnostic Steps
1
Step 1: Measure battery voltage and charging system output; verify stable 13.5-14.5V with engine running and no voltage fluctuations
2
Step 2: Inspect PCM connectors for corrosion, moisture, or damaged pins; ensure all terminals are fully seated and locked
3
Step 3: Check PCM power and ground circuits with voltmeter; verify battery voltage on power feeds and less than 0.1V on ground circuits
4
Step 4: Attempt PCM reprogramming with latest manufacturer software and calibrations; this may resolve software corruption issues
5
Step 5: If reprogramming fails or code returns immediately, replace PCM and program with VIN-specific software
Estimated Repair Cost
$200 - $2,000
Parts + labor, varies by vehicle and location
The PCM has detected an internal processor fault within the throttle actuator control module circuitry. This indicates a hardware or software failure in the control logic managing the electronic throttle system.
The most common cause of P2107 (Throttle Actuator Control Module Processor) is: PCM internal processor fault or memory corruption in throttle control module
Typical repair costs for P2107 range from $200 to $2,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may enter failsafe mode with unpredictable throttle response or complete loss of throttle control. Do not drive as engine may not respond predictably to accelerator input.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2107 to identify the root cause.
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Quick Info
Category
Powertrain
System
Electronic Throttle Control System / PCM
Difficulty
Type
Generic (SAE)
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