The OBD code P2149 for Nissan indicates a fault with Fuel Injector No.
2 and 3. Symptoms include the Engine Light being ON.
This code is usually caused by issues like faulty injectors, open/shorted harness, or poor electrical connections.
While it may not cause immediate drivability issues, it should be addressed promptly to prevent further damage.
A possible fix involves inspecting and repairing the wiring harness and connectors related to the affected fuel injectors.
| 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 Nissan p2149 OBD Code
The vehicle may experience a lack of power or rough running with fault code P2149.
- Symptoms: Engine Light ON.
- Reduced engine power.
- Rough idle.
- Engine may stall.
Causes of the Nissan p2149 OBD Code
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P2149 in Nissan indicates a fault related to the fuel injector group B supply voltage circuit.
- P2149 can be caused by faulty Fuel Injector No. 2 And 3.
- A Fuel Injector No. 2 And 3 harness that is open or shorted.
- A Fuel Injector No. 2 And 3 circuit with a poor electrical connection.
Fixing Nissan Error Code p2149 Step By Step
To resolve Nissan fault code P2149, inspect and repair the fuel injector group A supply voltage circuit.
- To fix Nissan OBDII code p2149, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the fuel injector group.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no issues are found with the wiring and connectors, proceed to test the fuel injector operation and resistance.
- Replace any faulty fuel injectors as needed.
- Clear the fault codes from the vehicle’s computer using a scan tool.
- Finally, perform a test drive to ensure the code does not return, indicating a successful repair.
Cost Of Fixing Nissan p2149 Fault Code
The repair for Nissan fault code P2149 typically involves replacing the fuel injector group B supply voltage circuit.
The cost to diagnose and fix the Nissan OBD code P2149 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the general cost could be between $75 and $150. Actual cost may vary based on shop rates, complexity of the issue, and parts needed.
Details of the Nissan p2149 OBD Code
Nissan fault code P2149 relates to fuel injector group A supply voltage circuit low.
Nissan OBD code P2149 means Fuel Injector Group A Supply Voltage Circuit/Open.
This code is triggered by the Engine Control Module (ECM) when it detects an open circuit or high resistance in the supply voltage circuit for fuel injector group A.
This can lead to issues with fuel delivery to the engine, affecting performance and fuel efficiency.
It is important to inspect the wiring, connectors, and fuel injector for any damage or corrosion that may be causing the circuit to be open.
Mechanic’s Tech Notes
Detailed information on diagnosing and repairing Nissan fault code p2149 related to fuel injector group B supply voltage circuit.
To diagnose and fix OBDII code P2149 on a Nissan, start by checking the Transmission Control Module (TCM) power and ground using a multimeter.
Ensure proper voltage levels are present.
Use a scan tool to confirm TCM communication over the Controller Area Network (CAN) network.
If communication issues are detected, reprogramming or reflashing the TCM may be necessary.
Additionally, inspect the wiring harness and connectors for any damage, and check for broken, bent, or corroded pins.
Address any issues found during the visual inspection to resolve the P2149 fault code effectively.
FAQ
Common symptoms of OBD code P2149 in a Nissan include Engine Light ON. Causes may be faulty Fuel Injector No. 2 and 3, harness issues. Fix: Inspect wiring and connectors.
OBD code P2149 in a Nissan is typically caused by faulty Fuel Injector No. 2 and 3, open/shorted harness, or poor electrical connection. Inspect and repair wiring/connectors.
Diagnose and repair OBD code P2149 in your Nissan by checking Fuel Injector No. 2 and 3, their harness, and connectors for faults. Repair as needed.
Wrap Up
If your Nissan is displaying OBD code P2149, you may experience issues like engine stalling, rough idling, or poor acceleration.
This code typically indicates a problem with the fuel injector group A supply voltage circuit, possibly caused by a faulty fuel injector, damaged wiring, or a poor electrical connection.
To address Nissan OBD code P2149, start by inspecting the wiring harness and connectors related to the fuel injector group A.
Check for any signs of damage, corrosion, or loose connections.
Test the fuel injector for proper operation and replace it if necessary to resolve the issue effectively.
