What are the common causes of P00C6?

A weak high pressure fuel pump. A failed fuel rail pressure sensor. A leaking injector on bank 1. A restricted fuel filter or line. A bad fuel pressure regulator.

Check fuel rail pressure while cranking on a scan tool. Compare commanded and actual rail pressure. Replace the fuel filter if rail pressure is short. Test the injectors on bank 1 for a leak. Replace the fuel rail pressure sensor or pump if pressure stays low. Clear the code and retest.

P00C6

Fuel Rail Pressure Too Low - Engine Cranking Bank 1

System: Fuel and air metering (P code)
Lamp: Check Engine Light
Category: Powertrain - Fuel/Air Metering

What it means

P00C6 means Fuel Rail Pressure Too Low - Engine Cranking Bank 1.

Check these first

A weak high pressure fuel pump
A failed fuel rail pressure sensor
A leaking injector on bank 1
A restricted fuel filter or line
A bad fuel pressure regulator

What to do next

Check fuel rail pressure while cranking on a scan tool
Compare commanded and actual rail pressure
Replace the fuel filter if rail pressure is short
Test the injectors on bank 1 for a leak
Replace the fuel rail pressure sensor or pump if pressure stays low
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.