Throttle/Pedal Position Sensor Correlation Error
The computer is getting throttle and accelerator pedal signals that do not match the way they should. This usually means a sensor, wiring, or connector problem, and it can cause poor throttle response or limp mode.
The vehicle may lose power, hesitate, or go into reduced-power mode. Short, careful driving may be possible, but it is not safe to ignore the problem or drive normally if performance is unstable.
P2135 indicates the powertrain control module has detected a mismatch between the throttle position sensor signals, often between TPS1 and TPS2, or related accelerator pedal position inputs depending on the vehicle design. The PCM expects these signals to track each other within a specific range; when they do not, it sets the code and may reduce engine power for safety.
Yes. Carbon buildup or a sticking throttle plate can contribute to mismatched sensor readings and trigger the code.
Most often it is the throttle body or accelerator pedal sensor assembly, but wiring faults are also very common.
Usually no. The code will return if the underlying sensor, wiring, or throttle problem is still present.