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
| Description: | The powertrain control module (PCM) monitors a vehicle operation rationality check by comparing sensed throttle position to mass air flow readings. If during a key on engine running (KOER) selftest, 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: |
|
||
| Diagnostic Aids: | Drive the vehicle and exercise the throttle and the TP sensor in all gears. A TP PID (TP V PID) less than 4.82% (0.24 volt) with a LOAD PID greater than 55%, or a TP PID (TP V PID) greater than 49.05% (2.44 volts) with a LOAD PID less than 30% indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | - | GO to Pinpoint Test DV . | GO to Pinpoint Test DV . |
| All others | - | GO to Pinpoint Test DH . | GO to Pinpoint Test DH . |