What does code P1442 mean?

Q: What does code P1442 mean?

EVAP Vacuum Switch High Voltage During Ignition On. P1442 on a Chrysler vehicle means the powertrain control module (PCM) saw the evaporative emission (EVAP) vacuum switch circuit report a voltage higher than expected during the ignition-on self-test. The PCM expects the switch signal to stay within a calibrated low-voltage range when the engine is not running, and a high-voltage reading tells it the circuit is open, shorted to voltage, or the switch has failed.

DTC codes / Chrysler codes / P1442

P1442 · ChryslerEVAP Vacuum Switch High Voltage During Ignition On

P1442 on a Chrysler vehicle means the powertrain control module (PCM) saw the evaporative emission (EVAP) vacuum switch circuit report a voltage higher than expected during the ignition-on self-test. The PCM expects the switch signal to stay within a calibrated low-voltage range when the engine is not running, and a high-voltage reading tells it the circuit is open, shorted to voltage, or the switch has failed.

SystemPowertrain

Code typeChrysler specific

SeverityLow

Fix difficultyIntermediate

AreaAuxiliary emission controls

Guidance is general and written for Chrysler vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.