P1358 Cadillac Code - Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 8
Quick Answer
The P1358 diagnostic trouble code for Cadillac vehicles indicates that there is an issue with the Ignition Control Module (ICM) output being high or a pulse being detected when the cylinder 8 is grounded. Common causes include Faulty Ignition Control Module (ICM), Wiring issues or short circuits in the ignition system, Malfunctioning cylinder 8 ignition coil. 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
- P1358 Cadillac indicates Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 8.
- Common causes
- Common causes include Faulty Ignition Control Module (ICM), Wiring issues or short circuits in the ignition system, Malfunctioning cylinder 8 ignition coil.
- 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 P1358 Cadillac Description
The P1358 diagnostic trouble code for Cadillac vehicles indicates that there is an issue with the Ignition Control Module (ICM) output being high or a pulse being detected when the cylinder 8 is grounded. The ICM plays a crucial role in the ignition system by controlling the timing of the spark plugs, which ignite the air-fuel mixture in the engine cylinders. When the ICM output is high or irregular, it can lead to misfires, rough idling, poor acceleration, and overall decreased engine performance.
Common Causes of P1358 Cadillac
- Faulty Ignition Control Module (ICM)
- Wiring issues or short circuits in the ignition system
- Malfunctioning cylinder 8 ignition coil
- Poor electrical connections or corrosion
- Engine overheating leading to damage to ignition components
Symptoms of P1358 Cadillac
- Rough idling or engine misfires
- Decreased fuel efficiency
- Engine hesitation or stalling
- Illuminated check engine light
- Loss of power during acceleration
How to Fix P1358 Cadillac
- Use an OBD-II scanner to confirm the P1358 code and pinpoint the exact issue.
- Inspect the wiring harness and connections related to the ICM and cylinder 8 ignition coil for any damage or corrosion.
- Test the Ignition Control Module and cylinder 8 ignition coil for proper functionality using a multimeter.
- Replace the faulty Ignition Control Module or ignition coil if necessary.
- Clear the trouble code from the vehicle's computer and test drive to ensure the issue is resolved.
Cost to Fix P1358 Cadillac
The typical repair costs for addressing a P1358 code in a Cadillac can vary depending on the specific cause of the issue. On average, the cost of replacing an Ignition Control Module or ignition coil can range from $200 to $500, including parts and labor. However, the exact cost may be higher if additional components need to be replaced or if diagnostic time is required to identify the root cause of the problem. It's recommended to consult with a trusted auto repair shop for a more accurate estimate based on your vehicle's make and model. Keep in mind that labor rates can vary based on location and the type of repair facility.
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