P1305 GMC Code - Ignition Coil 2 Primary Feedback Circuit
Quick Answer
The P1305 code for GMC vehicles relates to the Ignition Coil 2 Primary Feedback Circuit. Common causes include Faulty ignition coil, Damaged ignition coil wiring or connectors, Issues with the ECM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1305 GMC indicates Ignition Coil 2 Primary Feedback Circuit.
- Common causes
- Common causes include Faulty ignition coil, Damaged ignition coil wiring or connectors, Issues with the ECM.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1305 GMC Description
The P1305 code for GMC vehicles relates to the Ignition Coil 2 Primary Feedback Circuit. This code indicates that there is a problem with the primary circuit of ignition coil 2, which is responsible for generating the high voltage needed to ignite the air-fuel mixture in the engine cylinders. The ignition coil converts the low voltage from the battery into the high voltage needed for the spark plugs to fire, which in turn ignites the fuel in the combustion chamber.
Common Causes of P1305 GMC
- Faulty ignition coil
- Damaged ignition coil wiring or connectors
- Issues with the ECM
- Electrical short or open circuit in the ignition coil circuit
- Corrosion or moisture in the ignition coil circuit
Symptoms of P1305 GMC
- Check Engine Light is illuminated
- Engine misfires or runs rough
- Decreased fuel efficiency
- Engine stalling or hesitation
- Rough idling or difficulty starting the engine
How to Fix P1305 GMC
- Diagnose the issue by using a scan tool to retrieve the trouble codes and perform a visual inspection of the ignition coil and its wiring.
- Test the ignition coil using a multimeter to check for proper resistance and continuity.
- Inspect the ignition coil connectors and wiring for any signs of damage or corrosion.
- Replace the faulty ignition coil or repair any damaged wiring or connectors.
- Clear the trouble codes, reset the ECM, and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1305 GMC
The cost of repairing a P1305 code for GMC vehicles can vary depending on the specific cause of the issue. On average, the cost of replacing a faulty ignition coil can range from $100 to $300, including parts and labor. Additional costs may apply if there are other underlying issues that need to be addressed. It is recommended to consult with a qualified mechanic or dealership to get an accurate estimate based on your vehicle's make and model. Keep in mind that diagnostic time, labor rates, and parts prices can vary depending on location and other factors.
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