P151A 2017 Chevrolet Silverado Code - Throttle Actuator Control Signal Message Counter Incorrect
Quick Answer
Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Throttle Actuator Control (TAC) Module, Throttle Actuator Control Module harness is open or shorted, Throttle Actuator 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
- P151A 2017 Chevrolet Silverado indicates Throttle Actuator Control Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Throttle Actuator Control (TAC) Module, Throttle Actuator Control Module harness is open or shorted, Throttle Actuator 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 P151A 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P151A 2017 Chevrolet Silverado?
- Faulty Throttle Actuator Control (TAC) Module
- Throttle Actuator Control Module harness is open or shorted
- Throttle Actuator Control Module circuit poor electrical connection
How to Fix the DTC P151A 2017 Chevrolet Silverado?
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 P151A 2017 Chevrolet Silverado 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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Frequently Asked Questions about P151A 2017 Chevrolet Silverado Code
1. What does the OBDII code P151A mean on a 2017 Chevrolet Silverado?
P151A indicates an issue with the throttle actuator control system, specifically that the message counter for the throttle actuator signal is incorrect.
2. What are the symptoms of code P151A in a 2017 Chevrolet Silverado?
Common symptoms include reduced engine performance, potential "Limp Mode," an illuminated check engine light, and inconsistent throttle response.
3. What causes the P151A code to appear on a Chevy Silverado?
Possible causes include a malfunctioning throttle actuator control module, faulty wiring or connectors, or errors in communication between the engine control module (ECM) and throttle body.
4. How can I diagnose the P151A code on my 2017 Chevrolet Silverado?
Start by using a diagnostic scan tool to verify the code. Then inspect throttle body wiring, connectors, and the throttle actuator control module for damage or loose connections.
5. Can I drive my 2017 Chevrolet Silverado with a P151A code?
Driving with this code is not recommended, as the vehicle may enter "Limp Mode" or experience reduced throttle response, potentially compromising safety.
6. How do I fix the P151A code on my Chevy Silverado?
Repairs may include cleaning or replacing the throttle body, repairing damaged wiring or connectors, or reprogramming/replacing the throttle actuator control module.
7. Is the P151A code related to other throttle-related issues?
Yes, this code specifically involves the throttle actuator system, and it may be accompanied by other codes such as P1516 or P2135, which also relate to throttle control.
8. How much does it cost to repair a P151A code on a 2017 Silverado?
Repair costs vary but can range from $100 for cleaning and minor repairs to $500 or more for throttle body or module replacements.
9. Can a dirty throttle body cause the P151A code?
Yes, a dirty or carbon-clogged throttle body can disrupt the throttle actuator's operation and trigger the code.
10. Do I need to reprogram the ECM to fix the P151A code?
In some cases, reprogramming or updating the ECM software may be necessary if the issue is related to a mismatch in communication protocols.
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