AutoCodesGMC – P00CA GMC

P00CA GMC Code - Fuel Pressure Regulator High Control Circuit High Voltage

Quick Answer

High-pressure fuel is regulated by the high-pressure fuel pump actuator, which is a part of the high-pressure fuel pump. Common causes include Faulty High-Pressure Fuel Pump, High-Pressure Fuel Pump harness is open or shorted, High-Pressure Fuel Pump electrical circuit poor 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
P00CA GMC indicates Fuel Pressure Regulator High Control Circuit High Voltage.
Common causes
Common causes include Faulty High-Pressure Fuel Pump, High-Pressure Fuel Pump harness is open or shorted, High-Pressure Fuel Pump electrical circuit poor 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 1,841
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 16, 2022
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Code P00CA GMC Description

High-pressure fuel is regulated by the high-pressure fuel pump actuator, which is a part of the high-pressure fuel pump. The high-pressure fuel pump actuator is a solenoid valve. The Engine Control Module (ECM) provides battery voltage on the actuator high control circuit and ground on the actuator low control circuit. Both circuits are controlled through output drivers within the ECM. When deactivated, both drivers are disabled. When activated, the high control circuit driver energizes the high-pressure fuel pump actuator, and the low control circuit driver Pulse-Width Modulates (PWM) the low control circuit to the ground. The ECM monitors the voltage on the circuits to detect a failure. The Diagnostic Trouble Code (DTC) will set if the ECM detects a short to voltage in the high-pressure fuel pump actuator high control circuit.
OBDII Code P00CA GMC - Fuel Pressure Regulator High Control Circuit High Voltage - AutoCodes.com
P00CA GMC Code - Fuel Pressure Regulator High Control Circuit High Voltage

What are the Possible Causes of the DTC P00CA GMC?

  • Faulty High-Pressure Fuel Pump
  • High-Pressure Fuel Pump harness is open or shorted
  • High-Pressure Fuel Pump electrical circuit poor connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P00CA GMC?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P00CA GMC 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 P00CA GMC code?

Need more information on how to fix the P00CA GMC code? Get Access to Factory Service Manuals

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Information for Specific GMC Models

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 P00CA GMC Code

1. What are common symptoms of OBDII code P00CA in a GMC related to the Fuel Pressure Regulator High Control Circuit High Voltage?

Common symptoms include rough idling, decreased fuel efficiency, and potentially engine stalling.

2. What are the typical causes of OBDII code P00CA in a GMC related to the Fuel Pressure Regulator High Control Circuit High Voltage?

The code P00CA is usually triggered by issues with the fuel pressure regulator itself, wiring problems, or a faulty engine control module.

3. How can I diagnose the OBDII code P00CA in a GMC related to the Fuel Pressure Regulator High Control Circuit High Voltage?

Diagnosing this code involves using a scan tool to check for the specific code, inspecting the fuel pressure regulator and its wiring, and testing the voltage levels in the control circuit.

4. What repair tips can help fix OBDII code P00CA in a GMC related to the Fuel Pressure Regulator High Control Circuit High Voltage?

Repair tips may include replacing the fuel pressure regulator, repairing or replacing damaged wiring, and resetting the engine control module after fixing the issue.

5. Is it safe to continue driving my GMC with OBDII code P00CA related to the Fuel Pressure Regulator High Control Circuit High Voltage?

It is generally not recommended to continue driving with this code active, as it can lead to more serious engine problems and potential safety hazards.

6. Can a DIY enthusiast fix OBDII code P00CA in a GMC related to the Fuel Pressure Regulator High Control Circuit High Voltage?

Depending on your skills and experience, some DIY enthusiasts may be able to fix this code by following repair guides and using the necessary tools.

7. How much does it typically cost to repair OBDII code P00CA in a GMC related to the Fuel Pressure Regulator High Control Circuit High Voltage?

The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to a thousand dollars if professional services are needed.

8. Will resetting the OBDII system clear the P00CA code related to the Fuel Pressure Regulator High Control Circuit High Voltage in my GMC?

Resetting the OBDII system may temporarily clear the code, but it will likely return if the underlying issue causing the code is not fixed.

9. Are there any preventive measures to avoid triggering OBDII code P00CA in a GMC related to the Fuel Pressure Regulator High Control Circuit High Voltage?

Regular maintenance of the fuel system, checking for wiring damage, and addressing any engine performance issues promptly can help prevent this code from appearing.

10. How long does it take to repair OBDII code P00CA in a GMC related to the Fuel Pressure Regulator High Control Circuit High Voltage?

The repair time can vary depending on the exact cause of the issue and the availability of parts, but it may take a few hours to a full day for a professional mechanic to diagnose and fix the problem.

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