P16FF
Engine Controls Ignition Relay Request Signal Message Counter Incorrect
P16FF is an OBD-II diagnostic trouble code meaning: Engine Controls Ignition Relay Request Signal Message Counter Incorrect. Common causes: faulty ignition relay, problems with wiring or contacts. Estimated repair cost: $6–28.
Symptoms
- Problems starting the engine
- Unstable engine operation
- Check Engine Light Is On
- Loss of engine power
- Random engine shutdowns
Causes
- Faulty ignition relay
- Problems with wiring or contacts
- Engine control unit (ECU) malfunctions
- Short circuit in relay circuit
- Software error in ECU
How to Fix
- Check the condition of the ignition relay
- Inspect the wiring and contacts in the relay circuit
- Check the power and ground of the relay
- Scan the ECU for other errors
- If necessary, replace the ignition relay
- Update ECU firmware if manufacturer's recommendations are available
Related codes
FAQ
What does the P16FF code mean?
P16FF is an OBD-II diagnostic trouble code that indicates: Engine Controls Ignition Relay Request Signal Message Counter Incorrect
What causes a P16FF error code?
The most common causes of P16FF include: Faulty ignition relay; Problems with wiring or contacts; Engine control unit (ECU) malfunctions; Short circuit in relay circuit.
How do I fix a P16FF diagnostic trouble code?
To fix P16FF: Check the condition of the ignition relay. Inspect the wiring and contacts in the relay circuit. Check the power and ground of the relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P16FF?
Limited driving only, diagnose soon
How much does it cost to fix P16FF?
The estimated repair cost for P16FF is $6–28. Actual cost depends on your vehicle, location, and labor rates.
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