P256C Fault Code

Engine Idle Speed Selector Sensor/Switch Circuit Low

• What does that mean?
• Symptoms
• Causes
• Solutions

The Engine Idle Speed Selector Sensor/Switch Circuit Low fault code indicates a problem with the sensor or switch that regulates the engine's idle speed. This issue can affect the engine's performance and overall drivability.

What are the symptoms of the P256C code?

Drivers may experience rough idling, stalling, or fluctuations in engine RPM. Warning lights may also illuminate on the dashboard, indicating a potential issue with the idle speed control system.

What causes the P256C code?

Possible causes for this fault code include a faulty idle speed selector sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM) that manages idle speed settings.

How to fix P256C?

To resolve this issue, first inspect the wiring and connectors for any signs of damage or disconnection. If the wiring is intact, test the idle speed selector sensor for functionality. If the sensor is faulty, it should be replaced. Additionally, check the ECM for any stored codes or calibration issues that may need to be addressed.