P1355 Cadillac Code - Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 5
Quick Answer
The diagnostic trouble code P1355 for Cadillac vehicles indicates that there is an issue with the Ignition Control Module (ICM) output being high or generating pulses when the cylinder 5 is grounded. Common causes include Faulty Ignition Control Module (ICM), Wiring issues or poor electrical connections, Defective ignition coil for cylinder 5. 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
- P1355 Cadillac indicates Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 5.
- Common causes
- Common causes include Faulty Ignition Control Module (ICM), Wiring issues or poor electrical connections, Defective ignition coil for cylinder 5.
- 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 P1355 Cadillac Description
The diagnostic trouble code P1355 for Cadillac vehicles indicates that there is an issue with the Ignition Control Module (ICM) output being high or generating pulses when the cylinder 5 is grounded. The ICM is responsible for controlling the ignition timing of the engine, ensuring proper combustion and engine performance. When this code is triggered, it means that there is a fault in the ICM output related to cylinder 5, which can lead to misfiring, rough idling, and decreased engine performance.
Common Causes of P1355 Cadillac
- Faulty Ignition Control Module (ICM)
- Wiring issues or poor electrical connections
- Defective ignition coil for cylinder 5
- Engine overheating causing damage to the ICM
- Corrosion or damage to the ICM connector
Symptoms of P1355 Cadillac
- Engine misfires or rough idling
- Decreased engine performance
- Illumination of the Check Engine Light
- Increased fuel consumption
- Engine stalling or hesitation
How to Fix P1355 Cadillac
- Diagnose the issue by using a scan tool to retrieve the trouble code and perform a thorough inspection of the ignition system components.
- Check the wiring and electrical connections for any signs of damage or corrosion. Repair or replace as necessary.
- Test the ignition coil for cylinder 5 to ensure it is functioning properly. Replace if faulty.
- Inspect the Ignition Control Module for any visible damage or signs of failure. Replace if necessary.
- Clear the trouble code and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1355 Cadillac
The cost of repairing the P1355 code for a Cadillac can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost for parts such as an Ignition Control Module or ignition coil can range from $100 to $300. Labor costs can add another $100 to $200, bringing the total repair cost to approximately $200 to $500. It's important to note that labor rates at auto repair shops can vary, so it's advisable to obtain quotes from several shops to get a more accurate estimate. Additionally, factors such as vehicle make and model, as well as the location of the repair shop, can impact the final cost of the repair.
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