P04A0

Exhaust Pressure Control Valve B Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Deterioration in acceleration dynamics
Increased fuel consumption
Unstable engine operation at idle

Causes

Exhaust gas pressure control valve B malfunction
Valve is dirty or clogged
Problems with the wiring harness or connectors
Malfunction of the solenoid valve (solenoid)
Mechanical damage to the valve

How to Fix

Check the condition of the exhaust gas pressure control valve B
Clean or replace valve if necessary
Check the integrity of the wiring harness and connectors
Check the operation of the solenoid valve (solenoid)
Reset the error and check if it returns

Related codes

P0401 P0402 P0403