P0069 moderate

MAP - Barometric Pressure Correlation

The P0069 code means the vehicle's onboard diagnostic system has detected: MAP - Barometric Pressure Correlation. This is a moderate severity code.

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Keep driving?: Short distances only
DIY difficulty: moderate
Estimated cost: $100 - $350 (parts and labor)

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Common Symptoms

Check Engine Light on
Poor engine performance at varying altitudes
Reduced power output
Rough idle or stalling

Probable Causes (Ranked by Likelihood)

Faulty MAP sensor Very High
Clogged or kinked MAP sensor vacuum line High
Faulty barometric pressure sensor Moderate
Intake manifold vacuum leak Moderate

Step-by-Step Diagnostic Procedure

Confirm P0069 and check MAP and BARO sensor readings
Compare MAP sensor reading at key-on engine-off to barometric pressure
Inspect MAP sensor vacuum line for blockages or leaks
Test MAP and BARO sensor signals with scan tool

Frequently Asked Questions

What does P0069 mean?

P0069 indicates a correlation error between the MAP sensor and barometric pressure sensor readings, meaning one or both sensors are providing inaccurate data.

What is the barometric pressure sensor?

Some vehicles have a separate barometric pressure sensor, while others use the MAP sensor to read barometric pressure at key-on before the engine starts. P0069 sets when these readings do not correlate.

How do I diagnose P0069?

Compare the MAP sensor reading at key-on engine-off to actual barometric pressure. Check the MAP sensor vacuum line for blockages and test both sensors with a scan tool.