P0291
Cylinder 11 Injector A Circuit Low
P0291 is an OBD-II diagnostic trouble code meaning: Cylinder 11 Injector A Circuit Low. Common causes: open or short circuit in the injector wiring harness, cylinder 11 injector malfunction. Estimated repair cost: $56–167.
Symptoms
- Misfire in cylinder 11
- Reduced engine power
- Increased fuel consumption
- Unstable idle
- Check Engine light comes on
Causes
- Open or short circuit in the injector wiring harness
- Cylinder 11 injector malfunction
- Problems with the ECU
- Poor contact in the injector connector
- Corroded or damaged wires
How to Fix
- Check the integrity of the injector wiring harness
- Check the resistance of the injector of cylinder 11
- Inspect connectors for corrosion or damage
- Check the power and ground of the injector circuit
- If necessary, replace the injector or wiring harness
Related codes
Error P0291 by Vehicle Brand
FAQ
What does the P0291 code mean?
P0291 is an OBD-II diagnostic trouble code that indicates: Cylinder 11 Injector A Circuit Low
What causes a P0291 error code?
The most common causes of P0291 include: Open or short circuit in the injector wiring harness; Cylinder 11 injector malfunction; Problems with the ECU; Poor contact in the injector connector.
How do I fix a P0291 diagnostic trouble code?
To fix P0291: Check the integrity of the injector wiring harness. Check the resistance of the injector of cylinder 11. Inspect connectors for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0291?
Limited driving only, diagnose soon
How much does it cost to fix P0291?
The estimated repair cost for P0291 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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