Throttle Position Sensor Inconsistent with the Mass Air Flow Sensor
Table of contents
P0068 Possible Causes
- Faulty Mass Air Flow (MAF) sensor
- Large vacuum leak
- Leaking air duct system
- Mass Air Flow (MAF) poor electrical connection
- Manifold Absolute Pressure (MAP) poor electrical connection
- Faulty Manifold Absolute Pressure (MAP) sensor
- TP sensor not seated properly
- Faulty Throttle Position (TP) sensor
How do I fix code P0068?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P0068 code
The cost of diagnosing the P0068 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of power
- Engine rough idle
P0068 Description
The Powertrain Control Module (PCM) monitors a vehicle operation rationality check by comparing Throttle Position (TP) to Mass Air Flow (MAF) readings. If during a self-test, the comparison of the TP sensor and MAF sensor readings are not consistent with the calibrated load values, the test fails and a diagnostic trouble code is stored in continuous memory.
