P144E Code - EGR Cooler Bypass Status Line Circuit Low
Quick Answer
The Exhaust Gas Recirculation (EGR) Cooler Bypass Valve is used to redirect the EGR gases around the cooler when the engine is under certain operating conditions. Common causes include Faulty EGR Cooler Bypass Valve, EGR Cooler Bypass Valve harness is open or shorted, EGR Cooler Bypass Valve circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P144E indicates EGR Cooler Bypass Status Line Circuit Low.
- Common causes
- Common causes include Faulty EGR Cooler Bypass Valve, EGR Cooler Bypass Valve harness is open or shorted, EGR Cooler Bypass Valve circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P144E Description
What are the Possible Causes of the DTC P144E?
- Faulty EGR Cooler Bypass Valve
- EGR Cooler Bypass Valve harness is open or shorted
- EGR Cooler Bypass Valve circuit poor electrical connection
How to Fix the DTC P144E?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P144E code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P144E Buick — Closed Loop Diesel Particulate Filter Regeneration Control At Limit Stage 2 Low Temperature
- P144E Cadillac — Closed Loop Diesel Particulate Filter Regeneration Control At Limit Stage 2 Low Temperature
- P144E Chevrolet — Closed Loop Diesel Particulate Filter Regeneration Control At Limit Stage 2 Low Temperature
- P144E Dodge — EGR Cooler Bypass Status Line Circuit Low
- P144E GMC — Closed Loop Diesel Particulate Filter Regeneration Control At Limit Stage 2 Low Temperature
Frequently Asked Questions about P144E Code
1. What does the OBDII code P144E mean?
P144E indicates a problem with the EGR Cooler Bypass Status Line Circuit, specifically reporting a low voltage condition.
2. What are the symptoms of a P144E code?
Common symptoms include reduced engine performance, increased emissions, poor fuel efficiency, and possible activation of the check engine light.
3. What causes the P144E code to appear?
The code can be triggered by a faulty EGR cooler bypass valve, damaged wiring or connectors in the circuit, or a malfunctioning EGR temperature sensor.
4. Can I drive with a P144E code?
Driving with a P144E code is not recommended as it can lead to increased emissions, engine inefficiency, and potential long-term damage to the EGR system.
5. How do I diagnose the P144E code?
Diagnose the code by inspecting the EGR cooler bypass valve, testing the wiring and connectors for damage or corrosion, and using a multimeter to check for proper voltage in the circuit.
6. What repairs are needed to resolve a P144E code?
Repairs may include replacing the EGR cooler bypass valve, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing a faulty EGR temperature sensor.
7. How much does it cost to fix a P144E code?
The repair cost depends on the exact issue but typically ranges from $100 to $400, including parts and labor.
8. Can a dirty EGR system cause the P144E code?
Yes, carbon buildup in the EGR system can obstruct the bypass valve, leading to improper operation and triggering the code.
9. Will clearing the code with a scanner fix the P144E issue?
Clearing the code does not fix the underlying problem. Proper diagnosis and repairs are necessary to prevent the code from reappearing.
10. How can I prevent the P144E code from occurring?
Regular maintenance of the EGR system, including cleaning the valve and ensuring proper operation of related components, can help prevent this code.
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