P25B8
Auxiliary Ignition Switch On/Start Position Circuit Low
P25B8 is an OBD-II diagnostic trouble code meaning: Auxiliary Ignition Switch On/Start Position Circuit Low. Common causes: faulty ignition relay, open or short circuit in wiring. Estimated repair cost: $6–33.
Symptoms
- Problems starting the engine
- Incorrect operation of electrical equipment
- Check Engine Light Is On
- Intermittent operation of vehicle systems
- Loss of power when turning the key
Causes
- Faulty ignition relay
- Open or short circuit in wiring
- Problems with the ignition switch
- Contact corrosion
- Engine control unit malfunction
How to Fix
- Check the condition of the ignition relay
- Inspect the wiring for damage
- Check the ignition switch contacts
- Test the voltage in the circuit
- If necessary, replace faulty components
Related codes
Error P25B8 by Vehicle Brand
FAQ
What does the P25B8 code mean?
P25B8 is an OBD-II diagnostic trouble code that indicates: Auxiliary Ignition Switch On/Start Position Circuit Low
What causes a P25B8 error code?
The most common causes of P25B8 include: Faulty ignition relay; Open or short circuit in wiring; Problems with the ignition switch; Contact corrosion.
How do I fix a P25B8 diagnostic trouble code?
To fix P25B8: Check the condition of the ignition relay. Inspect the wiring for damage. Check the ignition switch contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P25B8?
Limited driving only, diagnose soon
How much does it cost to fix P25B8?
The estimated repair cost for P25B8 is $6–33. Actual cost depends on your vehicle, location, and labor rates.
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