OBD Guide

P0069

Manifold Absolute Pressure - Barometric Pressure Correlation

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • unstable engine idle
  • loss of engine power
  • increased fuel consumption
  • Difficulty starting the engine
  • jerks when accelerating
  • activation of emergency engine operation

Causes

  • MAP sensor malfunction
  • barometric pressure sensor malfunction
  • clogged vacuum tubes to the MAP sensor
  • sensor wiring damage
  • air leak in the intake manifold
  • engine control unit malfunction
  • air filter clogged

How to Fix

  1. check and clean sensor connector contacts
  2. measure resistance and voltage on MAP and BARO sensors
  3. check the integrity of the vacuum tubes to the MAP sensor
  4. check the intake manifold for leaks
  5. replace the air filter if necessary
  6. replace a faulty MAP or BARO sensor
  7. check and, if necessary, repair wiring
  8. clear error codes and test drive

Related codes

Error P0069 by Vehicle Brand