P144F Possible Causes
- Faulty EGR Cooler Bypass Valve
- EGR Cooler Bypass Valve harness is open or shorted
- EGR Cooler Bypass Valve circuit poor electrical connection
First diagnose P144F code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
Cost of diagnosing the P144F code
Labor: 1.0The cost of diagnosing the P144F code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
When is the P144F code detected?The Powertrain Control Module (PCM) has detected battery voltage on the status line when no voltage should be present.
P144F Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P144F MeaningThe 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. The EGR Cooler Bypass Valve is a smart device which communicates it's status to the Powertrain Control Module (PCM). At key on the EGR Cooler Bypass Valve drives the signal line low and then high and the PCM monitors for the correct status response from the EGR Cooler Bypass Valve. Throughout engine operation the PCM sends commands via the signal circuit to the EGR Cooler Bypass Valve and monitors the status line to confirm that the EGR Cooler Bypass Valve has reached the commanded position. When a fault occurs, the EGR Cooler Bypass valve will send a signal of less than one Volt on the status line to the PCM. This monitor is a one trip fault.
P144F More InformationNeed more information on how to fix the P144F code?
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P144F Information for specific makes
- P144F DODGE EGR Cooler Bypass Status Line Circuit High