P0A4A

Drive Motor B Position Sensor Circuit Overspeed

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–89 (est.)

Symptoms

Loss of engine power
Unstable engine operation
Check Engine light comes on
Problems starting the engine

Causes

Open or short circuit in the sensor circuit
Motor position sensor B fault
Poor contact in the sensor connector
Wiring harness damage
Engine control module malfunction

How to Fix

Check the integrity of the sensor wires and connectors
Check the resistance of the position sensor
Replace damaged wires or connectors
Replace motor position sensor B if necessary
Check and update engine control module firmware

Related codes

P0A48 P0A49 P0A4B