OBD-II code · Powertrain (generic)
P0A49 Drive Motor B Position Sensor Circuit Intermittent
The drive motor B rotor position sensor reports a circuit intermittent fault. Phase commutation cannot be controlled reliably.
Is it safe to drive with P0A49?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyConnector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Drive Motor B Position Sensor, Wiring Harness, Hybrid Control Module
Related codes
- P0A43Drive Motor A Position Sensor Circuit Intermittent
- P0A46Drive Motor B Position Sensor Circuit Range/Performance
- P0A47Drive Motor B Position Sensor Circuit Low
- P0A48Drive Motor B Position Sensor Circuit High
- P0A4ADrive Motor B Position Sensor Circuit Overspeed
- P0A4BGenerator Position Sensor Circuit
- P0A4CGenerator Position Sensor Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.