B3898
Rear Compartment Occupant Sensor Signal Missing
B3898 is an OBD-II diagnostic trouble code meaning: Rear Compartment Occupant Sensor Signal Missing. Common causes: passenger presence sensor malfunction, broken or damaged wiring harness. Estimated repair cost: $56–167.
Symptoms
- The security system malfunction indicator is on
- Incorrect operation of airbags
- Error B3898 in diagnostic scanner memory
Causes
- Passenger presence sensor malfunction
- Broken or damaged wiring harness
- Problems with the security control unit
- Short circuit in the sensor circuit
How to Fix
- Check the integrity of the wiring harness to the sensor
- Check resistance and power supply of the sensor
- Replace sensor if necessary
- Check the control unit for errors
- Clear error memory and perform system test
Related codes
Error B3898 by Vehicle Brand
FAQ
What does the B3898 code mean?
B3898 is an OBD-II diagnostic trouble code that indicates: Rear Compartment Occupant Sensor Signal Missing
What causes a B3898 error code?
The most common causes of B3898 include: Passenger presence sensor malfunction; Broken or damaged wiring harness; Problems with the security control unit; Short circuit in the sensor circuit.
How do I fix a B3898 diagnostic trouble code?
To fix B3898: Check the integrity of the wiring harness to the sensor. Check resistance and power supply of the sensor. Replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3898?
Do not drive — repair immediately
How much does it cost to fix B3898?
The estimated repair cost for B3898 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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