OBD Guide

P0E50

Motor Electronics Coolant Pump B Control Circuit Intermittent/Erratic

P0E50 is an OBD-II diagnostic trouble code meaning: Motor Electronics Coolant Pump B Control Circuit Intermittent/Erratic. Common causes: open or short circuit in control circuit, oxidized or damaged connectors. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Engine overheating
  • Uneven engine operation
  • Check Engine Light Is On
  • Reduced engine performance
  • Cooling pump works intermittently

Causes

  • Open or short circuit in control circuit
  • Oxidized or damaged connectors
  • Faulty pump relay
  • Problems with the engine control unit
  • Worn pump motor

How to Fix

  1. Check the integrity of wiring and connectors
  2. Test the pump relay
  3. Check pump functionality
  4. Scan the control unit for errors
  5. Replacing faulty circuit components

Related codes

Error P0E50 by Vehicle Brand

FAQ

What does the P0E50 code mean?

P0E50 is an OBD-II diagnostic trouble code that indicates: Motor Electronics Coolant Pump B Control Circuit Intermittent/Erratic

What causes a P0E50 error code?

The most common causes of P0E50 include: Open or short circuit in control circuit; Oxidized or damaged connectors; Faulty pump relay; Problems with the engine control unit.

How do I fix a P0E50 diagnostic trouble code?

To fix P0E50: Check the integrity of wiring and connectors. Test the pump relay. Check pump functionality. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0E50?

Limited driving only, diagnose soon

How much does it cost to fix P0E50?

The estimated repair cost for P0E50 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat