DTC P144A:00: Notes
WARNING: This page is about a different variant/trim than selected.
| DTC P144A:00 |
Evaporative emission system purge vapor line restrict/blocked |
| DETECTION CONDITION |
- The PCM monitors the EVAP system for a blocked fuel vapor tube between the fuel tank pressure (FTP) sensor and the fuel tank. During the initial phase of the EVAP monitor, the PCM closes the canister vent and a vacuum develops in the fuel vapor tubes and lines and in the fuel tank. The PCM monitors the FTP sensor to determine the amount of vacuum and how quickly the vacuum increases. The rate at which the vacuum increases is compared to an expected value. If the vacuum increases quicker than expected, a blocked fuel vapor tube is suspected and an intrusive test is carried out in the final phase of the EVAP monitor. If the intrusive test confirms a blockage a counter is incremented and once the counter reaches a calibrated number of completions, the DTC is set.
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| POSSIBLE CAUSE |
- Blocked fuel vapor tube between the FTP sensor and the fuel tank
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