P042E

EGR A Control Stuck Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable idle
Power Loss
Increased fuel consumption
The engine stalls

Causes

EGR valve dirty
EGR solenoid malfunction
Mechanical damage to the EGR valve
Problems with wiring or harness
Engine control unit malfunction

How to Fix

Check the condition of the EGR valve
Clean or replace EGR valve
Check the operation of the EGR solenoid
Check wiring and connections
If necessary, replace the engine control unit

Related codes

P0401 P0402 P0403 P0404