P012A

Turbocharger/Supercharger Inlet Pressure Sensor A Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Reduced engine power
Unstable engine operation
Increased fuel consumption
Check Engine light comes on
Turbo lag (delayed response to the gas pedal)

Causes

Malfunction of inlet pressure sensor
Open or short circuit in wiring harness
Poor contact in the sensor connector
Problems with power or grounding of the sensor
Engine control unit (ECU) malfunction

How to Fix

Check the integrity of the sensor wiring harness
Check connections and contacts in connectors
Check the supply voltage and grounding of the sensor
Check the sensor readings using a diagnostic scanner
If necessary, replace the inlet pressure sensor

Related codes

P012B P0235 P0236