P1201 2016 Chevrolet Silverado Code - Transmission Range Redundant Command Message Counter Incorrect
Quick Answer
The P1201 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a Transmission Range Redundant Command Message Counter Incorrect. Common causes include Faulty transmission range sensor, Wiring or connector issues between TCM and ECM, Malfunctioning TCM or 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
- P1201 2016 Chevrolet Silverado indicates Transmission Range Redundant Command Message Counter Incorrect.
- Common causes
- Common causes include Faulty transmission range sensor, Wiring or connector issues between TCM and ECM, Malfunctioning TCM or 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 P1201 2016 Chevrolet Silverado Description
The P1201 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a Transmission Range Redundant Command Message Counter Incorrect. This code typically points to a communication issue between the transmission control module (TCM) and the engine control module (ECM). The TCM and ECM work together to ensure proper operation of the transmission, including gear selection, shift points, and torque converter lockup. When the message counter is incorrect, it means that the TCM and ECM are not receiving or transmitting the necessary signals properly, leading to potential transmission performance issues.
Common Causes of P1201 2016 Chevrolet Silverado
- Faulty transmission range sensor
- Wiring or connector issues between TCM and ECM
- Malfunctioning TCM or ECM
- Software or programming issues
- Electrical interference or grounding problems
Symptoms of P1201 2016 Chevrolet Silverado
- Incorrect or erratic shifting patterns
- Harsh shifting or jerking when changing gears
- Transmission slipping or delayed engagement
- Limp mode activation
- Illumination of the Check Engine Light
How to Fix P1201 2016 Chevrolet Silverado
- Diagnose the issue using a professional scan tool to retrieve the specific fault codes and pinpoint the source of the communication error.
- Inspect the wiring harness and connectors between the TCM and ECM for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the transmission range sensor to ensure it is functioning correctly. Replace if faulty.
- Update the TCM and ECM software to the latest version to address any programming issues.
- Clear the fault codes, reset the system, and perform a test drive to verify that the transmission is operating properly.
Cost to Fix P1201 2016 Chevrolet Silverado
The cost of repairing a P1201 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the repair costs can range from $200 to $500, including parts and labor. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary significantly. Rates typically range from $80 to $150 per hour, with higher rates in metropolitan areas or at dealerships, and lower rates at independent shops. It's recommended to obtain quotes from local repair shops to get a more accurate estimate for this repair.
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Frequently Asked Questions about P1201 2016 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P1201 in a 2016 Chevrolet Silverado?
- Common symptoms include erratic shifting, transmission slipping, decreased fuel efficiency, and the transmission going into limp mode.
2. What does the OBDII code P1201 "Transmission Range Redundant Command Message Counter Incorrect" mean in a 2016 Chevrolet Silverado?
- This code indicates that the transmission control module has detected a discrepancy in the command message counter related to the transmission range.
3. What are the possible causes of OBDII code P1201 in a 2016 Chevrolet Silverado?
- Possible causes include a faulty transmission range sensor, issues with the transmission control module, wiring problems, or software glitches.
4. How serious is OBDII code P1201 in a 2016 Chevrolet Silverado?
- While the vehicle may still be operable with this code, it is important to address it promptly to prevent further damage to the transmission and ensure optimal performance.
5. How can I diagnose OBDII code P1201 in my 2016 Chevrolet Silverado?
- Diagnosis typically involves using a scan tool to retrieve the code, checking the transmission range sensor and related wiring, and inspecting the transmission control module for any faults.
6. Can I continue driving my 2016 Chevrolet Silverado with OBDII code P1201?
- It is not recommended to drive the vehicle extensively with this code present, as it can lead to potential transmission issues and safety concerns.
7. How can I repair OBDII code P1201 in my 2016 Chevrolet Silverado?
- Repair may involve replacing the transmission range sensor, addressing any wiring issues, reprogramming the transmission control module, or seeking assistance from a professional mechanic.
8. Will resetting the OBDII code P1201 in my 2016 Chevrolet Silverado make it go away permanently?
- Simply resetting the code may temporarily remove the warning light, but if the underlying issue is not addressed, the code is likely to reappear.
9. How much does it typically cost to fix OBDII code P1201 in a 2016 Chevrolet Silverado?
- The cost of repair can vary depending on the exact cause of the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.
10. Can OBDII code P1201 in a 2016 Chevrolet Silverado be prevented in the future?
- Regular maintenance, prompt attention to any transmission-related issues, and ensuring proper functioning of the transmission components can help prevent the recurrence of this code.
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