P2578

Turbocharger/Supercharger Speed Sensor A Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Reduced engine power
Unstable engine operation
Check Engine Light Illuminates
Increased fuel consumption
Turbocharging does not work correctly

Causes

Turbocharger speed sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Engine control unit malfunction
Mechanical damage to the wiring harness

How to Fix

Check the condition of the turbocharger speed sensor
Check the integrity of the sensor circuit and connection
Clean sensor connector contacts
Replace the speed sensor if necessary
Check the operation of the turbocharger after repair

Related codes

P2563 P2564 P2565