Engine-CodesGeneric – P012C

P012C Code - Turbocharger/Supercharger Inlet Pressure Sensor Circuit Low Downstream Of Throttle Valve

Quick Answer

The diagnostic trouble code P012C indicates a problem with the Turbocharger/Supercharger Inlet Pressure Sensor Circuit being low downstream of the throttle valve. Common causes include Faulty turbocharger/supercharger inlet pressure sensor, Wiring issues or electrical connection problems, Malfunctioning throttle valve. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P012C indicates Turbocharger/Supercharger Inlet Pressure Sensor Circuit Low Downstream Of Throttle Valve.
Common causes
Common causes include Faulty turbocharger/supercharger inlet pressure sensor, Wiring issues or electrical connection problems, Malfunctioning throttle valve.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P012C Description

The diagnostic trouble code P012C indicates a problem with the Turbocharger/Supercharger Inlet Pressure Sensor Circuit being low downstream of the throttle valve. In turbocharged or supercharged vehicles, the turbocharger or supercharger increases the air pressure entering the engine, which in turn increases power output. The inlet pressure sensor is responsible for monitoring the pressure of the air entering the engine to ensure optimal performance and fuel efficiency.

OBDII Code P012C - Turbocharger/Supercharger Inlet Pressure Sensor Circuit Low Downstream Of Throttle Valve
P012C Code - Turbocharger/Supercharger Inlet Pressure Sensor Circuit Low Downstream Of Throttle Valve

Common Causes of P012C

  1. Faulty turbocharger/supercharger inlet pressure sensor
  2. Wiring issues or electrical connection problems
  3. Malfunctioning throttle valve
  4. Faulty engine control module (ECM)
  5. Issues with the turbocharger or supercharger system

Symptoms of P012C

  1. Reduced engine power
  2. Poor fuel efficiency
  3. Rough idling or stalling
  4. Check Engine Light illuminated
  5. Loss of acceleration

How to Fix P012C

  1. Diagnose the issue by using a scan tool to read the fault codes and identify the specific problem with the turbocharger/supercharger inlet pressure sensor circuit.
  2. Inspect the wiring harness and connectors for any damage or corrosion. Repair or replace as necessary.
  3. Test the turbocharger or supercharger system to ensure it is functioning correctly. Address any issues found during testing.
  4. Replace the turbocharger/supercharger inlet pressure sensor if it is determined to be faulty.
  5. Clear the fault codes and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P012C

The cost of repairing a turbocharger/supercharger inlet pressure sensor circuit low downstream of the throttle valve can vary depending on the exact cause of the issue and the make and model of the vehicle. In general, the cost of parts for a new sensor can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost can be anywhere from $150 to $500. It is recommended to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle.

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Code P012C Information for Specific Makes

  • P012C Ford — Turbocharger/Supercharger Inlet Pressure Sensor Circuit Low Downstream Of Throttle Valve
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P012C Code

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  • 2010 Renault Megane 1.5dci - got a PO12C when I removed the MAP sensor to clean it, cleared the code and it hasn't come back