P048C

Exhaust Pressure Control Valve A Position Sensor/Switch Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Check Engine Light Is On
Unstable engine operation
Turbo problems

Causes

Valve position sensor malfunction
Open or shorted wiring harness
Poor contact in connectors
Mechanical failure of the pressure control valve
Problems with power or ground of the sensor circuit

How to Fix

Check the condition of the wiring harness and connectors
Measure resistance and voltage at the sensor
Check the mechanical operation of the valve
Replace position sensor if necessary
Clean or replace pressure control valve
Reset the error and check the system operation

Related codes

P048B P048D P0490