AutoCodes – Generic – P00C6

P00C6 Code - Fuel Rail Pressure Too Low Engine Cranking

Quick Answer

The high-pressure fuel system must reach a minimum pressure threshold before the engine can be started. Common causes include Fuel filter plugged or dirty, Fuel supply line restricted, Faulty Fuel Pump Module. 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: P00C6 indicates Fuel Rail Pressure Too Low Engine Cranking.
Common causes: Common causes include Fuel filter plugged or dirty, Fuel supply line restricted, Faulty Fuel Pump Module.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 81,949

How popular is this code, among other codes? Medium

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 20, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P00C6 Description

The high-pressure fuel system must reach a minimum pressure threshold before the engine can be started. This Diagnostic Trouble Code (DTC) will be set if the high-pressure fuel system cannot achieve this threshold within a certain time and crankshaft rotation limits; the Powertrain Control Module (PCM) attempts to start the engine at fuel pump assembly pressure.

OBDII Code P00C6 - Fuel Rail Pressure Too Low Engine Cranking - AutoCodes.com — P00C6 Code - Fuel Rail Pressure Too Low Engine Cranking

What does this mean?

What are the Possible Causes of the DTC P00C6?

Fuel filter plugged or dirty
Fuel supply line restricted
Faulty Fuel Pump Module
Faulty Fuel Injection Pump

How to Fix the DTC P00C6?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P00C6 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 P00C6 code?

Need more information on how to fix the P00C6 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P00C6 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P00C6 Buick — Fuel Rail Pressure Low During Engine Cranking
P00C6 Cadillac — Fuel Rail Pressure Low During Engine Cranking
P00C6 Chevrolet — Fuel Rail Pressure Low During Engine Cranking
P00C6 Ford — Fuel Rail Pressure Too Low Engine Cranking
P00C6 GMC — Fuel Rail Pressure Low During Engine Cranking
P00C6 Lincoln — Fuel Rail Pressure Too Low Engine Cranking
P00C6 Mercury — Fuel Rail Pressure Too Low Engine Cranking

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 P00C6 Code

1. What are the common symptoms of OBDII code P00C6 (Fuel Rail Pressure Too Low Engine Cranking)?

- Common symptoms include difficulty starting the engine, rough idling, poor acceleration, and potential stalling while driving.

2. What are the possible causes of OBDII code P00C6?

- The code P00C6 can be triggered by issues such as a faulty fuel pump, clogged fuel filter, fuel pressure regulator malfunction, or a leak in the fuel system.

3. How can I diagnose the cause of OBDII code P00C6?

- Diagnosing the code typically involves checking the fuel pressure using a gauge, inspecting the fuel pump operation, examining the fuel lines for leaks, and testing the fuel pressure regulator.

4. Can a dirty fuel filter cause OBDII code P00C6?

- Yes, a clogged or dirty fuel filter can restrict fuel flow and lead to low fuel pressure, triggering the P00C6 code.

5. Is it safe to continue driving with OBDII code P00C6 present?

- It is not recommended to continue driving with the P00C6 code since it can cause engine performance issues and potential damage if the underlying fuel system problem is not addressed promptly.

6. How can I repair OBDII code P00C6?

- Repairing the P00C6 code involves addressing the root cause, which may include replacing the fuel pump, fuel filter, pressure regulator, or repairing any fuel leaks in the system.

7. Can a DIY enthusiast fix OBDII code P00C6 at home?

- While some aspects of diagnosing and repairing the P00C6 code can be done by DIY enthusiasts, it is recommended to have a professional mechanic perform a thorough inspection and repair to ensure the issue is resolved correctly.

8. Will resetting the OBDII code P00C6 make it go away permanently?

- Simply resetting the code without addressing the underlying issue will not make it go away permanently. The root cause of the problem must be diagnosed and repaired to prevent the code from reappearing.

9. How important is it to address OBDII code P00C6 promptly?

- It is crucial to address the P00C6 code promptly to prevent potential engine damage, poor performance, and safety hazards while driving. Ignoring the code can lead to more severe issues over time.

10. Can extreme weather conditions affect OBDII code P00C6?

- Yes, extreme temperatures can impact fuel pressure and the overall performance of the fuel system, potentially triggering the P00C6 code. It is essential to ensure proper maintenance and monitoring, especially in harsh weather conditions.