P0A42

Drive Motor A Position Sensor Circuit High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$33–89 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
The car goes into emergency mode
Unstable engine operation
Problems starting the engine

Causes

Engine position sensor A fault
Open or short circuit in the sensor circuit
Poor contact in sensor connectors
Engine control module malfunction
Circuit Grounding Problems

How to Fix

Check the integrity of the sensor wiring and connectors
Measure resistance and voltage at the sensor
Check circuit grounding
Replace motor position sensor A if necessary
Scan the system for other fault codes

Related codes

P0A40 P0A41 P0A43