DTC P0069: Abnormal Correlation Between Manifold Absolute Pressure Sensor And Barometric Pressure Sensor

TECHNICAL DESCRIPTION
• The ECM <M/T> or PCM <A/T> detects abnormality in the sensor by comparing the manifold absolute pressure sensor output with the barometric pressure sensor output.
DESCRIPTIONS OF MONITOR METHODS
The ECM <M/T> or PCM <A/T> compares the manifold absolute pressure sensor output with the barometric pressure sensor output while the engine control relay is in "ON" position after the ignition switch is in "LOCK" (OFF) position. When the difference exceeds the specified value between them, the ECM <M/T> or PCM <A/T> determines whether the manifold absolute pressure sensor / the barometric pressure sensor has malfunction or not.
MONITOR EXECUTION
Continuous
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
• Not applicable

Sensor (The sensor below is determined to be normal)
• Not applicable

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions • Ignition switch is in "LOCK" (OFF) position. • After two seconds pass from the time when the engine is stopped. • Engine coolant temperature is higher than 0°C (32°F). Judgment Criterion • Difference between manifold absolute pressure sensor output and barometric pressure sensor output is more than 9 kPa (2.7 in.Hg) for 2 seconds. OBD-II DRIVE CYCLE PATTERN None. TROUBLESHOOTING HINTS (The most likely causes for this code to be set are: • Manifold absolute pressure sensor failed. • Barometric pressure sensor failed. • ECM failed. <M/T> • PCM failed. <A/T>