OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P00C6

Fuel Rail Pressure Too Low - Engine Cranking Bank 1

During engine cranking on bank 1, fuel rail pressure does not reach the level needed for start. Hard or no-start condition.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / C6

Possible causes

  • HP pump worn high
  • Fuel filter clogged medium

Inspection / repair

  • Difficulty: hard
  • DIY: shop recommended
  • Estimated cost: 80–1500 €
  • Estimated time: 0.5–5 h
  • Component: high pressure fuel pump
  • Component: fuel filter
  • Component: lift pump
  • MIL / check engine light
  • emissions-relevant
  • limp mode possible

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication