P23A7

Exhaust Heat Exchanger Exhaust Bypass Valve B Stuck Closed

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Increased level of harmful emissions
Overheating of exhaust system components

Causes

Mechanical valve jamming
Carbon accumulation in the valve
Solenoid valve malfunction
Problems with wiring or connectors
Engine control unit malfunction

How to Fix

Check the mechanical condition of the valve
Clean the valve from carbon deposits
Check the solenoid valve and its circuit
Check wiring harness and connectors
Replace bypass valve if necessary

Related codes

P23A6 P23A8 P23A9