AutoCodes – Chevrolet – P12A8 2017 Chevrolet Silverado

P12A8 2017 Chevrolet Silverado Code - Fuel Pump Control Status 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 Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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
P12A8 2017 Chevrolet Silverado indicates Fuel Pump Control Status Signal Message Counter Incorrect.
Common causes
Common causes include Faulty Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 428
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 27, 2022
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Code P12A8 2017 Chevrolet Silverado Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Fuel Pump Control Status Signal Message Counter is Incorrect.
OBDII Code P12A8 2017 Chevrolet Silverado - Fuel Pump Control Status Signal Message Counter Incorrect - AutoCodes.com
P12A8 2017 Chevrolet Silverado Code - Fuel Pump Control Status Signal Message Counter Incorrect

What are the Possible Causes of the DTC P12A8 2017 Chevrolet Silverado?

  • Faulty Fuel Pump
  • Fuel Pump harness is open or shorted
  • Fuel Pump circuit poor electrical connection

How to Fix the DTC P12A8 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 P12A8 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.

Need more information about the P12A8 2017 Chevrolet Silverado code?

Need more information on how to fix the P12A8 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P12A8 2017 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P12A8 2017 Chevrolet Silverado Code

1. What does OBDII code P12A8 mean for a 2017 Chevrolet Silverado?

Code P12A8 indicates that the fuel pump control module is reporting an incorrect status signal message counter, which may affect fuel delivery.

2. What are common symptoms of code P12A8 in a 2017 Chevrolet Silverado?

Symptoms may include engine hesitation, reduced power, difficulty starting, or a check engine light.

3. What causes code P12A8 in a 2017 Chevrolet Silverado?

Potential causes include a malfunctioning fuel pump control module, wiring issues, or software errors in the control module.

4. Can I drive with code P12A8 on my 2017 Chevrolet Silverado?

Driving may be possible but not recommended, as improper fuel delivery could lead to poor performance or further damage.

5. How is code P12A8 diagnosed on a 2017 Chevrolet Silverado?

Technicians typically inspect the fuel pump control module, wiring connections, and use diagnostic tools to analyze the signal communication.

6. What repairs can fix code P12A8 on a 2017 Chevrolet Silverado?

Repairs may include replacing the fuel pump control module, repairing damaged wiring, or reprogramming the module software.

7. How much does it cost to fix code P12A8 on a 2017 Chevrolet Silverado?

Repair costs can range from $200 to $800 depending on whether the module needs replacement or reprogramming.

8. Can a faulty fuel pump cause code P12A8 on a 2017 Chevrolet Silverado?

While rare, a malfunctioning fuel pump can indirectly affect the control module, but the issue is typically with the module itself.

9. How can I prevent code P12A8 from recurring on my 2017 Chevrolet Silverado?

Regular maintenance of the fuel system and ensuring the electrical connections to the control module are secure can help prevent recurrence.

10. Does code P12A8 require immediate attention on a 2017 Chevrolet Silverado?

Yes, addressing the code promptly is recommended to avoid fuel delivery issues that could impact engine performance.

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