P151A 2015 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 2015 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 2015 Chevrolet Silverado Description
What are the Possible Causes of the DTC P151A 2015 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 2015 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 2015 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 2015 Chevrolet Silverado Code
1. What does OBDII code P151A mean on a 2015 Chevrolet Silverado?
Code P151A indicates that the Throttle Actuator Control (TAC) system has detected an issue with the signal message counter, specifically that it is incorrect or out of range.
2. What are the common symptoms of code P151A in a 2015 Chevrolet Silverado?
Symptoms may include reduced engine power, poor throttle response, the check engine light turning on, and potential activation of "limp mode."
3. What causes the P151A code to appear on a 2015 Chevrolet Silverado?
Common causes include a faulty throttle body, damaged wiring or connectors in the throttle actuator control system, or a malfunctioning engine control module (ECM).
4. Can a dirty throttle body trigger code P151A?
Yes, a dirty or carbon-clogged throttle body can cause incorrect signal messages, potentially triggering the P151A code.
5. How do you diagnose the P151A code on a 2015 Chevrolet Silverado?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the throttle body and wiring for damage or debris, and checking for other related codes.
6. How serious is the P151A code for my 2015 Chevrolet Silverado?
This code can lead to reduced engine performance and safety concerns, so it should be addressed promptly to avoid further complications.
7. Can I drive my 2015 Chevrolet Silverado with code P151A?
Driving with this code is not recommended, as it may cause erratic throttle behavior, reduced power, or unsafe conditions.
8. What repairs can fix the P151A code on a 2015 Chevrolet Silverado?
Repairs may include cleaning or replacing the throttle body, repairing or replacing damaged wiring or connectors, or updating/replacing the ECM if necessary.
9. Do I need to reprogram the ECM after fixing the P151A code?
Reprogramming the ECM may be necessary if it was replaced or if a software update is required to resolve the issue.
10. Can a weak battery cause the P151A code on a 2015 Chevrolet Silverado?
Yes, a weak or failing battery can lead to voltage irregularities, potentially causing communication errors and triggering the P151A code.
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