Code result
P237C
Exhaust Heat Exchanger Bypass Valve A Control Circuit Open
Moderate severity
What it means
Exhaust Heat Exchanger Bypass Valve A Control Circuit Open: the control circuit is open. Likely a broken wire, disconnected connector, or failed actuator.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Open in harness or connector
highOne of the most commonly reported causes for this code — check this first.
Actuator solenoid or motor winding open
mediumA plausible cause — test and verify before replacing parts.
Pin pushed back out of connector body
lowLess common, but worth ruling out after the more likely causes.
Related help
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