The OBD code B27D1 for Nissan indicates an issue with the Starter Cut Relay circuit.
Symptoms include the Engine Light being ON.
The code is often caused by a faulty Starter Cut Relay, open/shorted harness, poor electrical connection, or faulty BCM/IPDM E/R.
This is a moderate issue.
To fix, inspect wiring and connectors for damage, and 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) |
Symptoms of the Nissan b27d1 OBD Code
The vehicle displays a warning light on the dashboard indicating a fault with the Nissan B27D1 code.
- Symptoms: Service Engine Soon Warning Light may illuminate.
- Vehicle may experience issues with the transmission control module.
- The vehicle may not shift gears properly.
- The transmission may go into limp mode.
Causes of the Nissan b27d1 OBD Code
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Possible triggers for Nissan B27D1 include faulty steering angle sensor or wiring issues.
- B27D1 can be caused by a faulty Starter Cut Relay.
- A Starter Cut Relay harness that is open or shorted.
- A Starter Cut Relay circuit with poor electrical connection.
- A faulty Body Control Module (BCM).
- A faulty Intelligent Power Distribution Module Engine Room (IPDM E/R).
Fixing Nissan Error Code b27d1 Step By Step
To resolve Nissan fault code B27D1, inspect and repair the driver side airbag module circuit.
- To fix the Nissan OBDII code B27D1, start by reviewing the possible causes mentioned above and visually examining the corresponding wiring harness and connectors.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If the wiring and connectors appear to be in good condition, proceed to reset the vehicle’s ECU by disconnecting the battery for about 15 minutes.
- After reconnecting the battery, start the vehicle and see if the code returns.
- If the code persists, consider updating the vehicle’s software to the latest version.
- If the issue still remains, it may be necessary to replace the affected module, such as the transmission control module (TCM), to resolve the B27D1 fault code.
Cost Of Fixing Nissan b27d1 Fault Code
Diagnosing and repairing Nissan fault code B27D1 may involve replacing the steering angle sensor.
The cost to diagnose and fix the Nissan OBD code B27D1 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150. Factors like shop rates and the complexity of the repair can affect the final cost.
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Details of the Nissan b27d1 OBD Code
The fault code B27D1 on a Nissan indicates an issue with the steering lock control module.
Nissan OBD code B27D1 means Rear Door Request Switch Circuit Short to Ground.
This code is triggered by the Body Control Module (BCM) when it detects a short to ground in the circuit related to the rear door request switch.
The rear door request switch is typically used to open or close the rear door electronically, and a short to ground in this circuit can prevent proper operation of the switch.
This code is specific to issues related to the rear door request switch circuit in Nissan vehicles.
Mechanic’s Tech Notes
Detailed information on diagnosing and repairing Nissan B27D1 code related issues for technicians.
To diagnose OBDII code B27D1 in a Nissan, start by checking the Transmission Control Module (TCM) power and ground using a multimeter.
Verify TCM communication over the Controller Area Network (CAN) using a scan tool.
If the TCM does not respond, reprogramming or reflashing may be necessary.
Visually inspect the wiring harness and connectors for any damage, focusing on broken, bent, or corroded pins.
Ensure all connections are secure.
If the issue persists, consider consulting a professional for further diagnosis and repair.
FAQ
OBD code B27D1 in a Nissan indicates an issue with the Starter Cut Relay circuit. Check for faulty relay, wiring, or BCM/IPDM E/R. Inspect and repair as needed.
Common symptoms of code B27D1 in a Nissan include the Engine Light ON. Possible causes are a faulty Starter Cut Relay or issues with related wiring harness/connectors.
Diagnose OBD code B27D1 in Nissan: Symptoms Engine Light ON. Causes Faulty Starter Cut Relay, harness issues, BCM/IPDM E/R faults. Fix Inspect wiring, connectors for damage.

Wrap Up
If your Nissan is displaying OBD code B27D1, you may experience issues with the transmission control module communication circuit.
This could be caused by faulty sensors, damaged wiring, or poor connections within the transmission system.
To address Nissan OBD code B27D1, start by inspecting the wiring harness and connectors related to the transmission control module.
Look for any signs of damage, corrosion, or loose connections.
Test the sensors involved in the transmission system and replace any components that are found to be faulty to resolve the communication circuit issue effectively.