DTC P0068: Manifold Absolute Pressure (Map)/Mass Air Flow (MAF) - Throttle Position Correlation

P0068 - MANIFOLD ABSOLUTE PRESSURE (MAP)/MASS AIR FLOW (MAF) - THROTTLE POSITION CORRELATION

For Vehicles With An Idle Air Control (IAC) Valve
Description:	The powertrain control module (PCM) monitors a vehicle operation rationality check by comparing sensed throttle position to mass airflow readings. If during a key ON, engine running (KOER) self-test, the comparison of the throttle position (TP) sensor and MAF sensor readings are not consistent with the calibrated load values, the test fails and a DTC is stored in continuous memory.
Possible Causes:	Air leak between MAF sensor and throttle body Damaged MAF sensor TP sensor not seated correctly Damaged TP sensor
Diagnostic Aids:	Diagnose any MAF or TP circuit DTCs first. Drive the vehicle and exercise the throttle and the TP sensor in all gears. A TP PID less than 4.82% (0.24 volt) with a LOAD PID greater than 55%, or a TP PID greater than 49.05% (2.44 volts) with a LOAD PID less than 30% indicates a concern is present.
For All Others
Description:	The powertrain control module (PCM) monitors a vehicle operation rationality check by comparing sensed throttle position to mass airflow readings. If during a key ON, engine running (KOER) self-test, the comparison of the throttle position (TP) sensor and MAF sensor readings are not consistent with the calibrated load values, the test fails and a DTC is stored in continuous memory.
Possible Causes:	Air leak between MAF sensor and throttle body. Damaged MAF sensor TP sensor not seated correctly Damaged TP sensor
Diagnostic Aids:	Diagnose any MAF or TP DTCs first. For Fiesta, if the throttle plate is closed and the LOAD PID is greater than 35%, or with the TP_REL PID at 28% with the LOAD PID less than 30% indicates a concern is present. For all others, if the throttle plate is closed and the LOAD PID is greater than 55%, or with the throttle plate at wide open throttle (WOT) with the LOAD PID less than 30% indicates a concern is present.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
Ranger	GO to PINPOINT TEST DH .
All others	GO to PINPOINT TEST DV .