P237F

Exhaust Heat Exchanger Exhaust Bypass Valve A Control Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Deterioration of vehicle dynamics
Increased fuel consumption
Unstable engine operation at idle
Increase in harmful emissions

Causes

Heat exchanger bypass valve malfunction
Open or short circuit in valve control circuit
Problems with the wiring harness or connectors
Engine control unit malfunction
Mechanical valve jamming

How to Fix

Check the condition of the heat exchanger bypass valve
Check the integrity of the control circuit and connectors
Check the resistance and operation of the solenoid valve
Scan the engine control unit for errors
If necessary, replace faulty valve or circuit components

Related codes

P2380 P2381 P237E