The P0068 trouble code indicates a correlation problem between the manifold absolute pressure (MAP) sensor, mass air flow (MAF) sensor, and the throttle position sensor. This code is typically related to inconsistencies in the data provided by these sensors, which affects the engine’s performance.
MAP/MAF – Throttle Position Correlation
Code symptoms P0068.
1. Reduced engine performance.
2. Rough idling or stalling.
3. Poor fuel efficiency.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0068.
1. Faulty MAP sensor, MAF sensor, or throttle position sensor.
2. Wiring or connector issues within the sensor circuit.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0068.
1. Inspect and replace the MAP sensor, MAF sensor, or throttle position sensor if any are found to be faulty.
2. Check and repair any damaged wiring or connectors in the sensor circuit.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.