OBD Guide

P0E75

Coolant Bypass Valve A Control Circuit/Open

P0E75 is an OBD-II diagnostic trouble code meaning: Coolant Bypass Valve A Control Circuit/Open. Common causes: valve control circuit open, coolant valve malfunction. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$17–56 (est.)

Symptoms

  • Engine overheating
  • Unstable engine temperature
  • Check Engine light comes on
  • Reduced cooling system efficiency

Causes

  • Valve control circuit open
  • Coolant valve malfunction
  • Problems with wiring or connectors
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the integrity of the valve control circuit
  2. Check the condition of the coolant valve
  3. Inspect wiring and connectors for damage
  4. Replace valve or wiring if necessary
  5. Check and, if necessary, replace the engine control unit

Related codes

Error P0E75 by Vehicle Brand

FAQ

What does the P0E75 code mean?

P0E75 is an OBD-II diagnostic trouble code that indicates: Coolant Bypass Valve A Control Circuit/Open

What causes a P0E75 error code?

The most common causes of P0E75 include: Valve control circuit open; Coolant valve malfunction; Problems with wiring or connectors; Engine control unit (ECU) malfunction.

How do I fix a P0E75 diagnostic trouble code?

To fix P0E75: Check the integrity of the valve control circuit. Check the condition of the coolant valve. Inspect wiring and connectors for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0E75?

Do not drive — repair immediately

How much does it cost to fix P0E75?

The estimated repair cost for P0E75 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat