Share a caseSign in
Air intakeSeverity Medium: diagnose soon

P0069Manifold Absolute Pressure – Barometric Pressure Correlation

What it means

With the engine off (or at start-up) the MAP sensor and the barometric pressure reading should be almost the same. They differ by more than allowed.

Symptoms

  • Check engine light
  • Sometimes hesitation or poor running
  • On diesels: limp mode

Common causes

  • Faulty MAP or boost pressure sensor
  • Blocked or split sensor hose
  • Faulty barometric sensor (often inside the ECU)
  • Wiring fault on the sensor signal or ground

What to check first

  1. Key on, engine off: compare MAP and baro in live data (should be within about 2–3 kPa)
  2. Check the sensor hose and port for oil or soot
  3. Check the sensor 5 V reference and ground
Can I drive with P0069? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

Cases with P0069 (0)

Share yours

No published cases with this code yet.

Colleagues asking about P0069

Ask for help

Stuck on P0069? Describe what you measured and ask the community.

P0069: questions and answers

What does P0069 mean?

P0069: Manifold Absolute Pressure – Barometric Pressure Correlation. With the engine off (or at start-up) the MAP sensor and the barometric pressure reading should be almost the same. They differ by more than allowed.

What are the symptoms of P0069?

Check engine light. Sometimes hesitation or poor running. On diesels: limp mode.

What causes P0069?

Faulty MAP or boost pressure sensor. Blocked or split sensor hose. Faulty barometric sensor (often inside the ECU). Wiring fault on the sensor signal or ground.

How do you diagnose P0069?

1. Key on, engine off: compare MAP and baro in live data (should be within about 2–3 kPa) 2. Check the sensor hose and port for oil or soot 3. Check the sensor 5 V reference and ground

Can I drive with P0069?

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.