OBD code B1681 indicates a fault in the Passive AntiTheft System (PATS) transceiver.
Symptoms include the Engine Light being ON.
Causes may include a faulty PATS transceiver, Powertrain Control Module (PCM), or PATS key.
This issue is moderate in seriousness.
To fix, inspect wiring harness, connectors, and components for damage or corrosion.
Check connector pins for any issues.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the b1681 OBD Code
The vehicle’s airbag warning light remains illuminated consistently with fault code B1681.
- Symptoms: Service Engine Soon Warning Light comes on.
- The vehicle may experience intermittent starting issues.
- The instrument cluster may display a warning message related to the PATS (Passive AntiTheft System).
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Causes of the b1681 OBD Code
Possible triggers for fault code B1681 include issues with the driverside airbag circuit.
- B1681 can be caused by a faulty Passive AntiTheft System (PATS) transceiver.
- A faulty Powertrain Control Module (PCM).
- A faulty Passive AntiTheft System (PATS) key.
Fixing Error Code b1681 Step By Step
To resolve fault code B1681, inspect and repair the driverside airbag module circuit as needed.
- To fix OBDII code B1681, first, review the possible causes related to this code.
- Visually inspect the wiring harness and connectors associated with the code.
- Check for any damaged components and examine the connector pins for signs of being broken, bent, pushed out, or corroded.
- Repair or replace any damaged wiring or connectors found during the inspection.
- Clear the fault code using a diagnostic scanner.
- Test drive the vehicle to verify if the issue has been resolved.
- If the code returns, further diagnosis may be necessary to pinpoint the exact cause of the B1681 code.
Cost Of Fixing b1681 Fault Code
The repair for fault code B1681 typically involves diagnosing and fixing an issue with the seatbelt pretensioner.
The cost to diagnose and fix OBD code B1681 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
The total cost depends on labor rates, shop fees, and the complexity of the repair.
Details of the b1681 OBD Code
B1681 pertains to a faulty PATS transceiver module in the vehicle.
OBD code B1681 means Antenna Not Connected Defective Transceiver.
This code is triggered by the Body Control Module (BCM) when it detects a fault in the antenna or transceiver circuit of the vehicle’s keyless entry system.
The BCM sends and receives signals to and from the transceiver through the antenna to allow for keyless entry functions like remote locking and unlocking of the doors.
Mechanic’s Tech Notes
Code B1681 indicates a fault in the driverside supplemental restraint system circuit.
OBDII code B1681 indicates a fault with the transmission control module (TCM) power input signal.
To diagnose, use a multimeter to check TCM power and ground connections for proper voltage levels.
Utilize a scan tool to confirm TCM communication over the Controller Area Network (CAN) bus.
Visually inspect wiring harnesses and connectors for any damage, and ensure connector pins are not broken, bent, pushed out, or corroded.
If necessary, consider reprogramming or reflashing the TCM.
This comprehensive approach will help pinpoint the issue and guide you towards an effective repair strategy.
FAQ
OBD code B1681 indicates an issue with the Passive AntiTheft System (PATS) transceiver, PCM, or key. Check wiring, connectors, and components for damage.
Common symptoms of OBD code B1681 include Engine Light ON, caused by issues like faulty PATS transceiver, PCM, or key. Fix involves inspecting wiring and connectors for damage.
Diagnose OBD code B1681 by checking PATS transceiver, PCM, and key. Inspect wiring harness, connectors, and pins for damage or corrosion. Fix as needed.
Wrap Up
If your airbag warning light is on and you see OBDII code b1681, it may indicate a fault in the passenger airbag indicator circuit.
This could be caused by a faulty passenger airbag indicator, damaged wiring, or poor connections.
To address OBDII code b1681, check the passenger airbag indicator for proper operation, inspect the wiring harness for any signs of damage, and ensure all connectors are securely attached.
Replace the passenger airbag indicator if necessary and repair any wiring issues found.
