P012B OBD-II: Turbocharger/Supercharger Inlet Pressure Sensor Circuit

P012B Severity

Moderate

Will P012B go away on its own?

Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.

For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.

Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.

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P012B Summary Find a Repair Shop P012B Details Ask RepairPal CarGenius Other OBD-II Codes

What causes OBD-II fault code P012B?

The Turbo/Supercharger inlet pressure sensor tells the engine control module (PCM) how much air is being forced into the engine When the PCM detects an incorrect signal from this sensor, it will set code P012B.This may send the vehicle into "limp home mode", limiting the amount of power out of the engine, to protect other components from being damaged.

OBD II Fault Code

OBD II P012B

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Turbocharger/Supercharger Inlet Pressure Sensor Circuit

Powertrain Control Module (PCM) failure Symptoms

Engine may enter limp home mode (reduced performance)
Lack of boost from the turbo/supercharger

Common Problems That Trigger the P012B Code

Inlet pressure sensor failure
Powertrain Control Module (PCM) failure
Wiring issue

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Other OBD-II Codes

P012A: Turbocharger/Supercharger Inlet Pressure Sensor Circuit P0129: Barometric Pressure Too Low P0128: Coolant Temperature Below Thermostat Regulating Temperature P0127: Intake Air Temperature Too High P0126: Insufficient Coolant Temperature for Stable Operation P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control P0124: Throttle/Pedal Position Sensor/Switch "A" Circuit Intermittent P0123: Throttle/Pedal Position Sensor/Switch "A" Circuit High P0122: Throttle/Pedal Position Sensor/Switch "A" Circuit Low P0121: Throttle/Pedal Position Sensor/Switch "A" Circuit P0120: Throttle/Pedal Position Sensor/Switch "A" Circuit P011D: Charge Air Temperature/Intake Air Temperature Correlation P012C: Turbocharger/Supercharger Inlet Pressure Sensor Circuit Low P012D: Turbocharger/Supercharger Inlet Pressure Sensor Circuit High P012E: Turbocharger/Supercharger Inlet Pressure Sensor Circuit P0130: O2 Sensor Circuit P0131: O2 Sensor Circuit Low Voltage P0132: O2 Sensor Circuit High Voltage P0133: O2 Sensor Circuit Slow Response P0134: O2 Sensor Circuit no Activity Detected P0135: O2 Sensor Heater Circuit P0136: O2 Sensor Circuit P0137: O2 Sensor Circuit Low Voltage P0138: O2 Sensor Circuit High Voltage

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