P2303
Ignition Coil B Primary Control Circuit Low
P2303 is an OBD-II diagnostic trouble code meaning: Ignition Coil B Primary Control Circuit Low. Common causes: faulty ignition coil, damaged wiring harness or connectors. Estimated repair cost: $17–56.
Symptoms
- Misfire in cylinder B
- Unstable engine operation
- Power reduction
- Increased fuel consumption
- Check Engine Light Is On
Causes
- Faulty ignition coil
- Damaged wiring harness or connectors
- Short circuit in the primary circuit
- Problems with the engine control unit
- Poor connection or corroded contacts
How to Fix
- Check the condition of the ignition coil
- Inspect the wiring harness and connectors for damage
- Check the resistance and integrity of the primary circuit
- Scan the control unit for other errors
- If necessary, replace the ignition coil
Related codes
Error P2303 by Vehicle Brand
FAQ
What does the P2303 code mean?
P2303 is an OBD-II diagnostic trouble code that indicates: Ignition Coil B Primary Control Circuit Low
What causes a P2303 error code?
The most common causes of P2303 include: Faulty ignition coil; Damaged wiring harness or connectors; Short circuit in the primary circuit; Problems with the engine control unit.
How do I fix a P2303 diagnostic trouble code?
To fix P2303: Check the condition of the ignition coil. Inspect the wiring harness and connectors for damage. Check the resistance and integrity of the primary circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2303?
Limited driving only, diagnose soon
How much does it cost to fix P2303?
The estimated repair cost for P2303 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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