OBD Guide
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P144F

EGR Cooler Bypass Status Line Circuit High

P144F is an OBD-II diagnostic trouble code meaning: EGR Cooler Bypass Status Line Circuit High. Common causes: open or short circuit in the egr bypass control circuit, egr bypass solenoid valve malfunction. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine idling
  • Increased emissions of harmful substances

Causes

  • Open or short circuit in the EGR bypass control circuit
  • EGR bypass solenoid valve malfunction
  • Wiring harness damage
  • Connector problems or contact corrosion
  • Engine ECU malfunction

How to Fix

  1. Check the integrity of the EGR bypass control circuit
  2. Check the condition of connectors and contacts
  3. Test the EGR bypass solenoid valve
  4. If necessary, replace faulty components
  5. Reset the error code and check the system operation

Related codes

P144EP1450P0401

FAQ

What does the P144F code mean?

P144F is an OBD-II diagnostic trouble code that indicates: EGR Cooler Bypass Status Line Circuit High

What causes a P144F error code?

The most common causes of P144F include: Open or short circuit in the EGR bypass control circuit; EGR bypass solenoid valve malfunction; Wiring harness damage; Connector problems or contact corrosion.

How do I fix a P144F diagnostic trouble code?

To fix P144F: Check the integrity of the EGR bypass control circuit. Check the condition of connectors and contacts. Test the EGR bypass solenoid valve. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P144F?

Yes, but get it checked soon

How much does it cost to fix P144F?

The estimated repair cost for P144F is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat