P1B03
Drive Motor 1 Position Sensor Circuit 2 High Voltage
P1B03 is an OBD-II diagnostic trouble code meaning: Drive Motor 1 Position Sensor Circuit 2 High Voltage. Common causes: motor position sensor 1 malfunction, damage or short circuit in the sensor circuit. Estimated repair cost: $56–167.
Symptoms
- Incorrect operation of the hybrid/electric system
- Reduced engine power
- Check Engine Light Illuminates
- Problems with switching driving modes
- Increased fuel consumption (in hybrid systems)
Causes
- Motor position sensor 1 malfunction
- Damage or short circuit in the sensor circuit
- Wiring Harness Problems
- Malfunction of the electronic control unit
- Corrosion of contacts or connectors
How to Fix
- Check the continuity of the position sensor circuit
- Inspect connectors and contacts for corrosion
- Check the resistance of the position sensor
- Scan the system for other errors
- If necessary, replace the position sensor
- Repair only from an authorized dealer
Related codes
FAQ
What does the P1B03 code mean?
P1B03 is an OBD-II diagnostic trouble code that indicates: Drive Motor 1 Position Sensor Circuit 2 High Voltage
What causes a P1B03 error code?
The most common causes of P1B03 include: Motor position sensor 1 malfunction; Damage or short circuit in the sensor circuit; Wiring Harness Problems; Malfunction of the electronic control unit.
How do I fix a P1B03 diagnostic trouble code?
To fix P1B03: Check the continuity of the position sensor circuit. Inspect connectors and contacts for corrosion. Check the resistance of the position sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1B03?
Do not drive — repair immediately
How much does it cost to fix P1B03?
The estimated repair cost for P1B03 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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