AutoCodes – Generic – P00CA

P00CA 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 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 4,258

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 Jun 24, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P00CA 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 - Fuel Pressure Regulator High Control Circuit High Voltage - AutoCodes.com — P00CA Code - Fuel Pressure Regulator High Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P00CA?

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?

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 P00CA 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 code?

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

Need Help with the Code?

Get the P00CA code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P00CA Buick — Fuel Pressure Regulator High Control Circuit High Voltage
P00CA Cadillac — Fuel Pressure Regulator High Control Circuit High Voltage
P00CA Chevrolet — Fuel Pressure Regulator High Control Circuit High Voltage
P00CA GMC — Fuel Pressure Regulator High Control Circuit High Voltage

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 Code

1. What are the common symptoms of OBDII code P00CA?

- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What can cause the OBDII code P00CA to trigger?

- The code P00CA is usually triggered by issues such as a faulty fuel pressure regulator, a high voltage condition in the fuel pressure regulator control circuit, or a wiring harness problem.

3. How can I diagnose the OBDII code P00CA?

- Diagnosing the code P00CA typically involves using a scan tool to retrieve the code, checking the fuel pressure regulator for proper operation, and inspecting the wiring harness for any damage or loose connections.

4. Is it safe to continue driving with the OBDII code P00CA present?

- It is not recommended to continue driving with the code P00CA present, as it can lead to further engine damage and potentially unsafe driving conditions.

5. How can I repair the OBDII code P00CA?

- Repairing the code P00CA may involve replacing the fuel pressure regulator, repairing any damaged wiring in the control circuit, or resetting the code after addressing any underlying issues.

6. Can a DIY enthusiast fix the OBDII code P00CA?

- While some DIY enthusiasts may be able to diagnose and repair the code P00CA, it is recommended to seek professional help, especially when dealing with fuel system components.

7. How much does it cost to repair the OBDII code P00CA?

- The cost of repairing the code P00CA can vary depending on the underlying issue, but it may range from $100 to $500, including parts and labor.

8. Will resetting the OBDII code P00CA make it go away permanently?

- Resetting the code P00CA without addressing the underlying issue will not make it go away permanently. The issue causing the code to trigger needs to be diagnosed and repaired.

9. Can a dirty fuel filter cause the OBDII code P00CA?

- While a dirty fuel filter can affect fuel pressure, it is not a common cause of the code P00CA. It is recommended to check the fuel pressure regulator and control circuit first.

10. How long does it take to repair the OBDII code P00CA?

- The repair time for the code P00CA can vary depending on the exact cause and complexity of the issue. It may take anywhere from 1 to 4 hours to diagnose and repair the problem.