The OBD code P012A indicates an issue with the Turbocharger/Supercharger Inlet Pressure Sensor.
Symptoms include the Engine Light being ON.
Causes may include a faulty sensor, open/shorted sensor harness, or poor electrical connection.
This is a moderate issue.
To fix, inspect the sensor, wiring harness, and connectors for any damage or corrosion.
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 p012a OBD Code
The vehicle may experience issues related to the intake camshaft overretarded position for fault code P012A.
- Symptoms: Engine Light ON.
- Reduced engine performance.
- Rough idle.
- Engine stalling.
- Hesitation during acceleration.
Causes of the p012a OBD Code
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P012A code typically indicates an issue with the throttle position sensor circuit range/performance.
- P012A can be caused by a Faulty Turbocharger/Supercharger Inlet Pressure Sensor.
- A Turbocharger/Supercharger Inlet Pressure Sensor harness that is open or shorted.
- A Turbocharger/Supercharger Inlet Pressure Sensor circuit with a poor electrical connection.
Fixing Error Code p012a Step By Step
To resolve fault code P012A, inspect and potentially replace the throttle position sensor.
- To fix OBDII code P012A, first, review the possible causes related to this code.
- Visually inspect the wiring harness and connectors associated with the throttle position sensor.
- Check for any damaged components or wiring.
- Inspect the connector pins for any signs of being broken, bent, pushed out, or corroded.
- If any issues are found during the inspection, repair or replace the damaged wiring or connectors accordingly.
- Finally, clear the fault code using a diagnostic scanner and test drive the vehicle to ensure the code does not return.
Cost Of Fixing p012a Fault Code
Diagnosing and repairing fault code P012A may involve inspecting and replacing the throttle position sensor.
The cost to diagnose and fix OBD code P012A 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.
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Details of the p012a OBD Code
Fault code P012A relates to the intake camshaft position being too slow to respond.
OBD code P012A means Turbocharger/Supercharger Inlet Pressure Sensor Circuit.
This code is triggered when the ECM detects a voltage signal from the turbocharger or supercharger inlet pressure sensor that is outside of the expected range.
The sensor is responsible for monitoring the pressure of the air entering the turbocharger or supercharger.
When the sensor signal deviates from the specified parameters, the ECM sets code P012A.
Mechanic’s Tech Notes
Code P012A relates to the intake camshaft position sensor having incorrect phase.
OBDII code P012A indicates an issue with the TCM powertrain control module.
To diagnose, use a multimeter to check TCM power and ground connections.
Verify TCM communication over the CAN network using a scan tool.
If no communication, reprogramming the TCM may be necessary.
Visually inspect wiring harnesses and connectors for damage, and check connector pins for corrosion or damage.
Ensure all connections are secure.
If the issue persists, consider consulting a professional for further diagnostics and potential TCM replacement.
FAQ
Common symptoms of OBD code P012A include Engine Light ON, caused by issues like faulty Turbocharger/Supercharger Inlet Pressure Sensor or related wiring problems. Fix involves inspecting and repairing sensor and wiring.
OBD code P012A is typically caused by a faulty Turbocharger/Supercharger Inlet Pressure Sensor, sensor harness issues, or poor electrical connections. Inspect and repair as needed.
Diagnose and repair OBD code P012A by checking for a faulty Turbocharger/Supercharger Inlet Pressure Sensor, inspecting wiring harness, connectors, and pins for damage or corrosion.

Wrap Up
If your vehicle displays OBDII code P012A along with rough idling, stalling, or poor acceleration, it may indicate a faulty Engine Coolant Temperature Sensor 1. Possible causes include sensor failure, wiring problems, or low coolant levels affecting sensor readings.
To address OBDII code P012A, start by checking the wiring harness and connector for any damage or corrosion.
Test the Engine Coolant Temperature Sensor 1 for proper resistance values or replace it if necessary.
Ensure the coolant level is adequate to prevent false sensor readings.