P1201 2018 Chevrolet Silverado Code - Transmission Range Redundant Command Message Counter Incorrect
Quick Answer
The P1201 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado specifically refers to the "Transmission Range Redundant Command Message Counter Incorrect." This code indicates that there is a discrepancy in the counter readings related to the transmission range commands, which are used to determine the gear position of the vehicle. Common causes include Faulty transmission range sensor, Wiring issues or poor connections in the transmission system, Software glitches in the TCM. 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
- P1201 2018 Chevrolet Silverado indicates Transmission Range Redundant Command Message Counter Incorrect.
- Common causes
- Common causes include Faulty transmission range sensor, Wiring issues or poor connections in the transmission system, Software glitches in the TCM.
- 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 P1201 2018 Chevrolet Silverado Description
The P1201 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado specifically refers to the "Transmission Range Redundant Command Message Counter Incorrect." This code indicates that there is a discrepancy in the counter readings related to the transmission range commands, which are used to determine the gear position of the vehicle. In simpler terms, the vehicle's computer is receiving conflicting information about the transmission's gear position, leading to confusion in the system.
Common Causes of P1201 2018 Chevrolet Silverado
- Faulty transmission range sensor
- Wiring issues or poor connections in the transmission system
- Software glitches in the TCM
- Mechanical issues within the transmission itself
- Incorrect calibration of the transmission range sensor
Symptoms of P1201 2018 Chevrolet Silverado
- Erratic shifting behavior
- Delayed engagement when shifting gears
- Harsh or rough shifting
- Stalling or hesitation during acceleration
- Transmission slipping
How to Fix P1201 2018 Chevrolet Silverado
- Diagnose the issue by using a scan tool to retrieve the DTC and inspect the transmission range sensor for faults.
- Check the wiring and connectors in the transmission system for any damage or corrosion.
- Calibrate or replace the transmission range sensor if it is found to be faulty.
- Clear the DTC from the vehicle's computer and reset the TCM to ensure proper communication.
- Test drive the vehicle to verify that the issue has been resolved and that the transmission is functioning correctly.
Cost to Fix P1201 2018 Chevrolet Silverado
The typical repair costs for addressing a P1201 code on a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, you can expect to pay anywhere from $200 to $500 for parts and labor for this repair. However, it's important to note that diagnosis time and labor rates can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate based on your specific circumstances.
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