P155D Code - Hill Descent Control Message Counter Incorrect
Quick Answer
Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module circuit poor electrical connection. 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
- P155D indicates Hill Descent Control Message Counter Incorrect.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module circuit poor electrical connection.
- 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.
Code P155D Description
What are the Possible Causes of the DTC P155D?
- Faulty Transmission Control Module (TCM)
- Transmission Control Module harness is open or shorted
- Transmission Control Module circuit poor electrical connection
How to Fix the DTC P155D?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P155D code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P155D Buick — Hill Descent Control Message Counter Incorrect
- P155D Cadillac — Hill Descent Control Message Counter Incorrect
- P155D Chevrolet — Hill Descent Control Message Counter Incorrect
- P155D GMC — Hill Descent Control Message Counter Incorrect
Frequently Asked Questions about P155D Code
1. What are the common symptoms of OBDII code P155D (Hill Descent Control Message Counter Incorrect)?
- The common symptoms include the illumination of the check engine light, a message indicating "Hill Descent Control Message Counter Incorrect," and potential issues with the hill descent control system.
2. What are the possible causes of OBDII code P155D?
- The code P155D can be caused by a malfunction in the hill descent control module, a faulty sensor related to the system, wiring issues, or a software glitch.
3. How serious is the OBDII code P155D (Hill Descent Control Message Counter Incorrect)?
- While the code itself may not affect the drivability of the vehicle, it can indicate a potential problem with the hill descent control system, which is a safety feature. It is advisable to address the issue promptly.
4. How can I diagnose the OBDII code P155D?
- Diagnosing the code typically involves using a diagnostic scanner to retrieve the specific fault codes, checking the hill descent control system components for any visible damage, and performing system tests as recommended by the vehicle manufacturer.
5. Can I continue driving with the OBDII code P155D present?
- It is generally not recommended to ignore the OBDII code P155D, especially if it involves the hill descent control system. Continued driving with unresolved issues may affect the performance of the system or compromise safety in certain driving conditions.
6. What are the repair options for OBDII code P155D?
- Repair options may include resetting the code to see if it reoccurs, checking and repairing any damaged wiring or connections, replacing faulty sensors or components, and updating the system software if necessary.
7. Can I fix the OBDII code P155D myself?
- Depending on your skill level and access to the necessary tools, you may be able to address the OBDII code P155D yourself by performing basic checks on the system components, such as inspecting wiring and connections. However, more complex repairs may require professional assistance.
8. Will the OBDII code P155D cause my vehicle to fail an emissions test?
- The OBDII code P155D itself may not directly cause your vehicle to fail an emissions test, but it is an indication of a potential issue that should be addressed to ensure proper functioning of the hill descent control system.
9. How much does it typically cost to repair the OBDII code P155D?
- The cost of repairing the OBDII code P155D can vary depending on the underlying cause of the issue, the extent of the repairs needed, and whether you choose to address it yourself or seek professional help. Costs may range from a simple sensor replacement to more extensive module repairs.
10. Is it common for vehicles to experience the OBDII code P155D?
- The OBDII code P155D specifically related to the "Hill Descent Control Message Counter Incorrect" is not as common as some other codes, but it can occur in vehicles equipped with a hill descent control system and may require attention to ensure the system operates correctly.
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