What P2135 means
Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation
Common causes (general)
Before spending money on parts, verify the code with a scan tool and read freeze frame data. Freeze frame captures every sensor value at the moment the code set — this is often enough to figure out the root cause without further testing.
Manufacturer-specific descriptions
Different manufacturers use this code for slightly different failure modes. Here's what your specific make means by P2135:
| AUDI | Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle Position Sensor (TPS) failure, Wiring issue |
| BMW | Throttle/Pedal Position Sensor/Switch "A" / "B" Voltage Correlation |
| FIAT | between sensor ped. acc. 1 and sensor ped. acc. 2 Electrical Wiring Fault |
| HONDA | Throttle Position (TP) Sensor 1/2 Incorrect Voltage Correlation |
| MITSUBISHI | TPS(main/sub) correlation |
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