The P2545 code indicates that the voltage or signal from the accelerator pedal position sensor (or related torque management input) is outside the expected range, causing the PCM to detect a performance problem.
The sensor may send voltage signals that are too low, too high, or erratic, triggering the range/performance fault. This is the most common cause of P2545.
Corroded, damaged, or loose pins in the sensor circuit can interrupt the signal, causing intermittent or persistent faults.
Although less common for this specific code, a severely out‑of‑range throttle position sensor can affect torque management and set P2545.
A malfunctioning PCM can misinterpret the input signal, but this is rare; the PCM is usually the last component to suspect.
No. In the majority of cases the fault is due to a sensor or wiring issue; replacing the PCM is seldom necessary and is usually not covered by warranty for this code.
It is a drivability/torque‑management code, not a direct emissions control code, though a faulty sensor can affect fuel efficiency.
The PCM may limit engine power or enter limp‑mode to protect the engine, so the vehicle can still operate but with reduced performance.
It should be addressed promptly to avoid prolonged reduced power and potential damage to other components.