AutoCodes – Cadillac – P12A8 Cadillac

P12A8 Cadillac 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 Cadillac 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.

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Code Popularity 1,422

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 27, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P12A8 Cadillac 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 Cadillac - Fuel Pump Control Status Signal Message Counter Incorrect - AutoCodes.com — P12A8 Cadillac Code - Fuel Pump Control Status Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P12A8 Cadillac?

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

How to Fix the DTC P12A8 Cadillac?

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 Cadillac 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 Cadillac code?

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

Need Help with the Code?

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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 Cadillac Code

1. What are the common symptoms of OBDII code P12A8 in a Cadillac related to the Fuel Pump Control Status Signal Message Counter Incorrect?

- Common symptoms include rough idling, poor acceleration, stalling, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P12A8 in a Cadillac?

- The code P12A8 in a Cadillac can be triggered by issues with the fuel pump control module, wiring or connection issues, or a faulty fuel pump.

3. How can I diagnose the OBDII code P12A8 related to the Fuel Pump Control Status Signal Message Counter Incorrect in my Cadillac?

- Diagnosing the code typically involves checking the fuel pump control module, inspecting the wiring for any damage, and testing the fuel pump itself for proper function.

4. Can a bad fuel pump cause the OBDII code P12A8 in a Cadillac?

- Yes, a faulty fuel pump can trigger the OBDII code P12A8 in a Cadillac due to issues with the fuel pump control status signal message counter.

5. How should I repair the OBDII code P12A8 in my Cadillac?

- Repairing the code may involve replacing the fuel pump, repairing any damaged wiring, or reprogramming the fuel pump control module.

6. Is it safe to continue driving my Cadillac with the OBDII code P12A8 present?

- It is not recommended to drive your Cadillac with the OBDII code P12A8 present, as it can lead to further damage to the fuel system and potentially cause the vehicle to stall.

7. Can a DIY enthusiast fix the OBDII code P12A8 issue in a Cadillac?

- While some individuals with automotive repair experience may be able to diagnose and repair the issue, it is recommended to seek professional help for accurate diagnosis and proper repair.

8. How much does it typically cost to repair the OBDII code P12A8 in a Cadillac?

- The cost of repairing the OBDII code P12A8 in a Cadillac can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Will resetting the OBDII code P12A8 in my Cadillac make it go away permanently?

- Simply resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to return.

10. Is the OBDII code P12A8 specific to Cadillac vehicles, or can it occur in other makes and models?

- While the specific code P12A8 may be Cadillac-specific, similar fuel pump control status signal message counter incorrect issues can occur in other vehicle makes and models as well.