DTC P0068: TP Sensor Inconsistent With MAF Sensor: Condition

DTC is set when Powertrain Control Module (PCM) detects input voltages from Throttle Position (TP) sensor and Mass Airflow (MAF) sensor are not consistent with calibrated load values. PCM compares actual input voltage from MAF sensor with expected input voltage from MAF sensor which PCM calculates using input voltage from TP sensor. This is a continuous monitor. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:

• MAF sensor malfunction.
• TP sensor malfunction.
• Electrical corrosion in MAF signal circuit.
• Voltage drops in MAF signal circuit.