P00F7
Barometric Pressure - Turbocharger/Supercharger Inlet Pressure Correlation Bank 2.
- Generic
- Powertrain
- Generic code
- Medium severity
How this code is built
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- 0
- AreaFuel and air metering, auxiliary emission controls
- F7
- FaultThe specific fault in that area
What it means
P00F7 is a generic code meaning the barometric pressure reading and the turbocharger or supercharger inlet pressure reading on bank 2 do not agree. The control unit compares the two signals, which should be almost identical when the engine is off or the inlet is unrestricted. It set the code because the difference was larger than the allowed limit for long enough. The fault may lie in either sensor, their wiring, or a restriction in the bank 2 intake path.
Symptoms
- Engine warning light on
- Reduced power or limp mode with boost limited
- Poor acceleration or turbo lag
- Rich or lean running, possibly with black smoke or poor fuel economy
- Other pressure or boost related codes stored alongside it
Possible causes
- Faulty or contaminated turbo inlet pressure sensor on bank 2likely
- Blocked or restricted air filter or intake ducting feeding bank 2 (including collapsed hose)likely
- Damaged wiring, poor connector contact or corrosion in the sensor circuit (signal, supply or ground)likely
- Faulty barometric pressure sensor, or a drifting reading from whichever sensor the engine control unit uses for barometric pressurepossible
- Air leak, split or loose clamp in the intake between the air filter and the compressor on bank 2possible
- Faulty engine control unit or outdated software where a manufacturer bulletin names it as a known causerare
How to diagnose
- Read all stored and pending codes and the freeze frame data, noting engine load, speed and altitude conditions when the code set
- Check for related codes on sensor supply voltage, boost pressure or the other bank, as these point to a shared cause
- Visually inspect the air filter, intake ducting and bank 2 inlet pipe for blockage, collapse, splits, loose clamps or debris
- Inspect the bank 2 inlet pressure sensor connector and wiring for damage, corrosion, water ingress or chafing
- With the ignition on and engine off, compare live barometric pressure and bank 2 inlet pressure readings; they should match closely and be plausible for your altitude
- Compare the bank 2 reading with the bank 1 reading and with the barometric reading to see which sensor is out of line
- Check sensor supply voltage, ground and signal at the connector against the manufacturer's specification, as values vary by model and engine
- Check for software updates or technical bulletins for your specific vehicle before considering the control unit
How to fix
- Replace a faulty bank 2 inlet pressure sensor or barometric pressure sensor, confirmed by readings that disagree with a known good value
- Replace or clean a blocked air filter and clear any intake restriction
- Repair or replace damaged wiring, terminals or connectors in the sensor circuit
- Replace split or collapsed intake hoses and refit or replace loose clamps to remove air leaks
- Where a manufacturer bulletin identifies a faulty or outdated calibration as the cause, update the control unit software to the current release
Can I keep driving?
The car can usually be driven short distances, but expect reduced power and poorer economy while boost is limited. Get it checked soon, because an intake restriction or leak can affect engine and turbo operation, and avoid heavy loads until it is fixed.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.