OBD code P004F indicates a problem with the turbocharger/supercharger boost control module in the engine.
Symptoms include the Engine Light being ON.
The issue is commonly caused by a faulty boost pressure/turbocharger position sensor or related wiring issues.
It is crucial to address this code promptly to prevent potential engine damage.
A possible fix involves inspecting and repairing the sensor, wiring harness, and connectors for any faults.
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 p004f OBD Code
The vehicle may experience turbocharger boost control module performance issues with fault code P004F.
- Symptoms: Engine Light ON.
- Reduced engine power.
- Loss of turbocharger boost.
- Rough idle.
- Turbocharger noise.
Causes of the p004f OBD Code
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Possible triggers for fault code P004F include issues with the turbocharger or wastegate control.
- P004F can be caused by a faulty boost pressure/turbocharger position sensor.
- A boost pressure/turbocharger position sensor harness that is open or shorted.
- A boost pressure/turbocharger position sensor circuit with poor electrical connection.
- Or a faulty turbocharger/supercharger.
Fixing Error Code p004f Step By Step
Replace the turbocharger boost control module to address fault code P004F.
- To fix OBDII code P004F, first, review the possible causes related to this code.
- Visually inspect the wiring harness and connectors associated with the turbocharger boost control position sensor circuit.
- Check for any damaged components and ensure the connector pins are not broken, bent, pushed out, or corroded.
- If no visible issues are found, test the turbocharger boost control position sensor for proper operation.
- Replace the sensor if it is faulty.
- Clear the fault codes from the vehicle’s computer using a scan tool.
- Test drive the vehicle to verify that the code does not return.
Cost Of Fixing p004f Fault Code
Diagnosing and repairing fault code P004F may involve inspecting and replacing the turbocharger boost control position sensor.
The cost to diagnose and fix OBD code P004F typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
Costs depend on labor rates, shop fees, and the complexity of the repair needed.
Details of the p004f OBD Code
P004F code indicates a fault in the turbocharger boost control module performance.
OBD code P004F means Turbo/Super Charger Boost Control ‘A’ Circuit Performance.
This code is triggered when the ECM detects that the actual turbocharger boost pressure does not match the desired boost pressure.
The ECM monitors this using various sensors such as the boost pressure sensor, throttle position sensor, and intake air temperature sensor.
If the actual boost pressure deviates significantly from the desired pressure, the ECM will trigger this fault code.
Mechanic’s Tech Notes
Detailed information on fault code P004F, which relates to a low voltage condition in the turbocharger boost control module.
OBDII code P004F indicates a fault with the turbocharger boost control position sensor circuit.
To diagnose, use a voltmeter to check for proper voltage at the sensor and inspect the wiring for any damage.
Scan tools can help monitor sensor data and confirm proper communication over the CAN network.
If the wiring and sensor check out, the issue may lie with the sensor itself or the turbocharger system.
Reflashing the engine control module may be necessary to resolve the fault.
FAQ
OBD code P004F indicates an issue with the boost pressure/turbocharger position sensor. Check sensor, wiring, and connectors for faults.
Common symptoms of OBD code P004F include Engine Light ON, caused by issues like faulty boost pressure sensor or turbocharger. Inspect and repair related components and wiring.
Diagnose and repair OBD code P004F by checking boost pressure sensor, wiring, and connectors for faults. Inspect turbocharger for issues. Fix as needed.

Wrap Up
If your vehicle displays OBDII code P004F, you may experience poor acceleration, reduced engine power, or a noticeable decrease in fuel efficiency.
This code typically indicates a problem with the turbocharger boost control position sensor circuit, possibly due to a faulty sensor, damaged wiring, or poor electrical connections.
To address OBDII code P004F, start by inspecting the wiring harness and connectors associated with the turbocharger boost control position sensor.
Look for any signs of wear, corrosion, or damage that may be affecting the sensor’s performance.
Test the sensor itself for proper operation and replace it