P1AF4
Drive Motor 1 Control Module Hybrid Battery Voltage Isolation Sensor Circuit Low Voltage
P1AF4 is an OBD-II diagnostic trouble code meaning: Drive Motor 1 Control Module Hybrid Battery Voltage Isolation Sensor Circuit Low Voltage. Common causes: insulation sensor fault, wiring harness damage. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Reduced performance of the hybrid system
- Possible shutdown of the hybrid system
- Error message on the dashboard
- Increased noise from the hybrid system
Causes
- Insulation sensor fault
- Wiring harness damage
- Short circuit in the circuit
- Problems with the hybrid battery control module
- Contact corrosion
How to Fix
- Check the integrity of the wiring harness
- Check the voltage at the insulation sensor
- Check connections and contacts
- Replace insulation sensor if necessary
- Repair only from an authorized dealer
Related codes
FAQ
What does the P1AF4 code mean?
P1AF4 is an OBD-II diagnostic trouble code that indicates: Drive Motor 1 Control Module Hybrid Battery Voltage Isolation Sensor Circuit Low Voltage
What causes a P1AF4 error code?
The most common causes of P1AF4 include: Insulation sensor fault; Wiring harness damage; Short circuit in the circuit; Problems with the hybrid battery control module.
How do I fix a P1AF4 diagnostic trouble code?
To fix P1AF4: Check the integrity of the wiring harness. Check the voltage at the insulation sensor. Check connections and contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1AF4?
Do not drive — repair immediately
How much does it cost to fix P1AF4?
The estimated repair cost for P1AF4 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat