P256E
Engine Idle Speed Selector Sensor/Switch Circuit Intermittent/Erratic
P256E is an OBD-II diagnostic trouble code meaning: Engine Idle Speed Selector Sensor/Switch Circuit Intermittent/Erratic. Common causes: damage to the sensor wiring harness, oxidation of contacts in the sensor connector. Estimated repair cost: $17–56.
Symptoms
- Unstable idle speed
- Floating engine speed
- Difficulty starting the engine
- Engine stalling at idle
- Check Engine Light Illuminates
Causes
- Damage to the sensor wiring harness
- Oxidation of contacts in the sensor connector
- Malfunction of the idle speed selection sensor
- Circuit Grounding Problems
- Short circuit in wiring
How to Fix
- Check the condition of the sensor wiring harness
- Clean the contacts in the sensor connector
- Check the resistance and voltage in the sensor circuit
- Replace the idle speed select sensor if necessary
- Reset the error code and check the system operation
Related codes
Error P256E by Vehicle Brand
FAQ
What does the P256E code mean?
P256E is an OBD-II diagnostic trouble code that indicates: Engine Idle Speed Selector Sensor/Switch Circuit Intermittent/Erratic
What causes a P256E error code?
The most common causes of P256E include: Damage to the sensor wiring harness; Oxidation of contacts in the sensor connector; Malfunction of the idle speed selection sensor; Circuit Grounding Problems.
How do I fix a P256E diagnostic trouble code?
To fix P256E: Check the condition of the sensor wiring harness. Clean the contacts in the sensor connector. Check the resistance and voltage in the sensor circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P256E?
Yes, but get it checked soon
How much does it cost to fix P256E?
The estimated repair cost for P256E is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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