P151A 2014 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 2014 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 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P151A 2014 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 2014 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 2014 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 2014 Chevrolet Silverado Code
1. What does the OBDII code P151A mean on a 2014 Chevrolet Silverado?
P151A indicates an issue with the throttle actuator control (TAC) system, specifically a mismatch or error in the signal message counter.
2. What are the common symptoms of a P151A code?
Symptoms may include reduced engine power, hesitation during acceleration, poor throttle response, or the activation of the "Reduced Engine Power" warning on the dashboard.
3. What causes the P151A code on a 2014 Chevrolet Silverado?
Common causes include a faulty throttle body, damaged or corroded wiring in the throttle actuator control circuit, or issues with the powertrain control module (PCM).
4. Can a dirty throttle body trigger the P151A code?
Yes, a dirty or clogged throttle body can cause improper throttle actuator operation, potentially leading to the P151A code.
5. How is the P151A code diagnosed?
Diagnosis typically involves using an OBDII scanner, inspecting the throttle body and its wiring for damage or corrosion, and checking the PCM for software updates or malfunctions.
6. Can I drive my 2014 Chevrolet Silverado with the P151A code?
Driving with this code is not recommended, as it may result in reduced engine power or unsafe driving conditions.
7. What is the most common fix for the P151A code?
The most common fix is cleaning or replacing the throttle body or repairing wiring issues related to the throttle actuator control circuit.
8. How much does it cost to repair a P151A code on a Chevrolet Silverado?
Repair costs vary but typically range from $150 to $500, depending on whether the throttle body needs cleaning, replacement, or if wiring repairs are required.
9. Can a software update for the PCM resolve a P151A code?
In some cases, a software update for the PCM may resolve the issue if the problem is related to a programming error.
10. Is the P151A code covered under warranty for a 2014 Chevrolet Silverado?
It may be covered if the vehicle is still within the powertrain warranty period. Contact your dealership for details.
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