P1AB9
Starter/Generator Field Coil Current Sensor Circuit Low Voltage
P1AB9 is an OBD-II diagnostic trouble code meaning: Starter/Generator Field Coil Current Sensor Circuit Low Voltage. Common causes: winding current sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–89.
Symptoms
- Problems starting the engine
- Battery charge indicator flashing
- Generator power reduction
- Unstable engine operation
- Check Engine light comes on
Causes
- Winding current sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in connectors
- Starter/generator malfunction
- Problems with the engine control unit (ECU)
How to Fix
- Check the continuity of the current sensor circuit
- Inspect connectors and contacts for corrosion or damage
- Check the functionality of the current sensor
- Diagnose the starter/generator for faults
- If necessary, replace the sensor or starter/alternator
Related codes
FAQ
What does the P1AB9 code mean?
P1AB9 is an OBD-II diagnostic trouble code that indicates: Starter/Generator Field Coil Current Sensor Circuit Low Voltage
What causes a P1AB9 error code?
The most common causes of P1AB9 include: Winding current sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in connectors; Starter/generator malfunction.
How do I fix a P1AB9 diagnostic trouble code?
To fix P1AB9: Check the continuity of the current sensor circuit. Inspect connectors and contacts for corrosion or damage. Check the functionality of the current sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1AB9?
Yes, but get it checked soon
How much does it cost to fix P1AB9?
The estimated repair cost for P1AB9 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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