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AutoCodes - Generic - P004C

P004C Code - Turbocharger/Supercharger Boost Control 'B' Circuit Low

- Code Popularity: 9,575 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P004C?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty boost pressure/ turbocharger position sensor
  • Boost pressure/ turbocharger position sensor harness is open or shorted
  • Boost pressure/ turbocharger position sensor circuit poor electrical connection
  • Faulty turbocharger/supercharger
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How to Fix the DTC P004C?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P004C code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P004C Description

The turbocharger has nozzle vane which opens and closes to control the volume of the exhaust gas flowing into the turbine. This, in turn, controls the boost pressure, when the nozzle vane moves towards the closing direction, the pressure increases. When the vane moves towards the opening direction, the pressure decreases.

OBDII Code P004C - Turbocharger/Supercharger Boost Control 'B' Circuit Low - AutoCodes.com
P004C Code - Turbocharger/Supercharger Boost Control 'B' Circuit Low

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Code P004C comments

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