P00CF code meaning
Barometric Pressure - Turbocharger/Supercharger Boost Sensor A Correlation
Powertrain system Generic code P00xx codes Check engine light
What P00CF means
With the engine stopped or without boost, the boost pressure sensor A (between compressor and throttle) must read practically ambient pressure. This code is set when it deviates from the barometric pressure sensor by more than a threshold; the code does not say which of the two is wrong. Manufacturers that publish their diagnostics run the same comparison under other codes. None of the published manufacturer documents searched uses this code; the explanation follows regulations and comparable manufacturer monitors.
P00CF at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1 hours
- Clears after repairAfter a drive cycle
Symptoms of P00CF
- Check engine light on
- Reduced boost or limp mode possible
- Often no further symptoms
Common causes of P00CF
- Most likelyBoost pressure sensor dirty, oil-coated or drifting
- PossibleBarometric sensor drifting, also when inside the control module
- PossibleContact resistance at connector, ground or 5 V reference
- PossibleSensor port or hose leaking or blocked
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Boost pressure sensor aBarometric pressure sensorSensor reference voltage
What each part of P00CF means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 0 | Area: fuel and air metering and auxiliary emission controls. |
| CF | The exact fault in that area. |
What to do next
- Note P00CF and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P00CF
What does P00CF mean?
P00CF means "Barometric Pressure - Turbocharger/Supercharger Boost Sensor A Correlation". With the engine stopped or without boost, the boost pressure sensor A (between compressor and throttle) must read practically ambient pressure. It is a generic code, so it means the same on every make.
Is it safe to drive with P00CF?
Drive gently and only to a workshop. With P00CF the car can go into limp mode (reduced power) to protect itself.
Will P00CF fail an emissions test?
Yes, it can. P00CF is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P00CF to fix?
Difficulty: easy. A typical repair takes 0.3 to 1 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P00CF clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.