P2AD1

Throttle/Pedal Position Sensor/Switch C/G Voltage Correlation

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Loss of engine power
The car goes into emergency mode
Unstable engine operation at idle
Delayed response to pressing the gas pedal

Causes

Gas pedal position sensor malfunction
Problems with wiring or contacts
Short circuit or open circuit in the sensor circuit
Engine control module malfunction
Corrosion or oxidation of contacts

How to Fix

Check the condition of the wiring and sensor connectors
Test pedal position sensors using a multimeter
Clean contacts from corrosion and oxidation
Replace a faulty pedal position sensor
Check and, if necessary, replace the engine control module

Related codes

P2122 P2127 P2138