P0A47 code meaning
Drive Motor B Position Sensor Circuit Low
Powertrain system Generic code P0Axx codes Check engine light
What P0A47 means
P0A47 means a resolver signal of motor B is below its allowed range, typically from a sine, cosine or excitation line shorted to ground or a shorted coil. No manufacturer documents this code publicly. Mitsubishi files low resolver signals of the 2023 Outlander PHEV rear motor under its own codes instead: P0C57 for sine and P0C61 for cosine at 0.3 V or less for 0.18 s. Kia uses the motor A twin P0A41 on the Optima Hybrid and blames shorts or pin fit in the sub-harness. CARB 1968.2 requires circuit monitoring of electric drive components, and Bosch patents show how a ground short is told apart by line offset. P0A48 is the high side, P0A45 the general circuit fault. Expect a warning lamp and reduced motor B drive.
P0A47 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 8 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0A47
- MIL or hybrid service lamp
- Second motor disabled, reduced traction or power
- Fault may come and go with vibration or moisture
Common causes of P0A47
- Most likelyResolver sine, cosine or excitation line shorted to ground
- PossiblePoor pin fit or water ingress at the motor B resolver connector
- Less likelyShorted resolver coil inside motor B
- Less likelyFaulty resolver input stage in the motor control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor b position sensorWiring harnessHybrid control module
What each part of P0A47 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| A | Area: hybrid propulsion. |
| 47 | The exact fault in that area. |
What to do next
- Note P0A47 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0A47
What does P0A47 mean?
P0A47 means "Drive Motor B Position Sensor Circuit Low". P0A47 means a resolver signal of motor B is below its allowed range, typically from a sine, cosine or excitation line shorted to ground or a shorted coil. It is a generic code, so it means the same on every make.
Is it safe to drive with P0A47?
Drive gently and only to a workshop. With P0A47 the car can go into limp mode (reduced power) to protect itself.
Will P0A47 fail an emissions test?
Yes, it can. P0A47 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0A47 to fix?
Difficulty: workshop only. A typical repair takes 1 to 8 hours of work. This is a job for a workshop.
Will P0A47 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.