Skip to content
P0E73 Powertrain

Coolant Bypass Valve A Control Circuit/Open

The coolant bypass valve A reports a control circuit/open condition.

Affected components

  • Coolant bypass valve a
  • Wiring harness

Common causes

  • High likelihood: Open in control wire
  • Medium likelihood: Coil open
  • Low likelihood: Pin pushed back out of connector body

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • Reduced-power or limp mode may occur

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

You might like