What Does P2131 Mean?
The PCM has determined that Throttle/Pedal Position Sensor F signal is not correlating properly with other position sensors or is out of expected range for operating conditions. This is a rationality or performance fault.
Common Causes
35%
Accelerator pedal position sensor drift or degradation causing correlation mismatch
25%
Contamination or mechanical binding in accelerator pedal assembly
20%
Intermittent connection or high resistance in sensor circuit affecting signal quality
12%
Throttle body sensor out of calibration causing correlation fault
8%
PCM software requiring update or calibration issue
Diagnostic Steps
1
Step 1: Monitor both APP sensor voltages simultaneously in live data and verify they track proportionally through pedal range
2
Step 2: Physically inspect accelerator pedal for binding, sticking, or contamination (floor mat interference, debris)
3
Step 3: Graph APP sensor voltages if scanner capable and look for erratic movement, flat spots, or sudden jumps
4
Step 4: Check for Technical Service Bulletins related to APP sensor calibration or software updates
5
Step 5: If correlation between sensors is incorrect or erratic, replace accelerator pedal assembly
Estimated Repair Cost
$200 - $600
Parts + labor, varies by vehicle and location
The PCM has determined that Throttle/Pedal Position Sensor F signal is not correlating properly with other position sensors or is out of expected range for operating conditions. This is a rationality or performance fault.
The most common cause of P2131 (Throttle/Pedal Position Sensor/Switch "F" Circuit Range/Performance) is: Accelerator pedal position sensor drift or degradation causing correlation mismatch
Typical repair costs for P2131 range from $200 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause reduced throttle response or limp mode activation. Could result in unexpected acceleration characteristics affecting vehicle control.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2131 to identify the root cause.
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Quick Info
Category
Powertrain
System
Electronic Throttle Control (ETC)
Difficulty
Type
Generic (SAE)
Recommended Tools
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