P1356 Cadillac Code - Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 6
Quick Answer
The P1356 diagnostic trouble code for Cadillac vehicles indicates that the Ignition Control Module (ICM) is detecting a high output or pulse when the cylinder 6 ignition coil is grounded. Common causes include Faulty ignition control module, Wiring issues or shorts in the ignition system, Defective ignition coil for cylinder 6. 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
- P1356 Cadillac indicates Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 6.
- Common causes
- Common causes include Faulty ignition control module, Wiring issues or shorts in the ignition system, Defective ignition coil for cylinder 6.
- 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 P1356 Cadillac Description
The P1356 diagnostic trouble code for Cadillac vehicles indicates that the Ignition Control Module (ICM) is detecting a high output or pulse when the cylinder 6 ignition coil is grounded. This issue can lead to misfires, rough idling, and overall poor engine performance. The ICM is responsible for controlling the ignition coils and timing, so any malfunction in this component can have a significant impact on the vehicle's operation.
Common Causes of P1356 Cadillac
- Faulty ignition control module
- Wiring issues or shorts in the ignition system
- Defective ignition coil for cylinder 6
- Corrosion or poor connections in the ignition system
- Engine overheating leading to damage in the ignition components
Symptoms of P1356 Cadillac
- Engine misfires
- Rough idling or stalling
- Decreased acceleration
- Illumination of the Check Engine Light
- Poor fuel economy
How to Fix P1356 Cadillac
- Begin by diagnosing the specific cause of the P1356 code using a diagnostic scanner and multimeter to test the ignition control module, wiring, and ignition coil for cylinder 6.
- Replace the faulty ignition control module if it is determined to be the cause of the issue. Ensure that the replacement module is compatible with the vehicle's make and model.
- Check and repair any damaged wiring or connections in the ignition system that may be causing the grounding issue.
- Replace the ignition coil for cylinder 6 if it is found to be defective or damaged.
- Clear the trouble codes from the vehicle's computer system and test drive the vehicle to ensure that the issue has been resolved.
Cost to Fix P1356 Cadillac
The cost of repairing a P1356 code in a Cadillac can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair for this code can range from $200 to $500, including parts and labor. It's important to consult with a trusted mechanic or auto repair shop to get an accurate estimate based on your vehicle's make and model. Additional costs may apply if other components need to be replaced or if further diagnostics are required.
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