× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0442 Diagnostic Trouble Code Discussion for February 2009

EVAP System Small Leak Detected

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0442
Help Request Posted
2003 Jeep Grand Cherokee Laredo 4.0L Poor Idle Quality, Surge, Cuts out VIN: 1J4GW48S33
P0442: EVAP System Medium Leak (0.040") Detected. Thanks in advance for the help. So far I replaced the throttle positioning sensor and that cleared the eratic idle for a little bit. But the volts came back up to 0.57 and the eratic idle came back. I've searched everywhere looking for leaks and haven't came a...
February 19, 2009
2001 Dodge Dakota Sport 4.7L Poor Idle Quality VIN: 1B7GG22N51
P0442: EVAP System Small Leak (0.040") Detected. I did a search on the inj and tps codes- found trouble with TPS, scoped and looked good. I did replace the tps with OEM. Found the vac hose at the evap test port cracked-replaced. The truck has a high idle and IAC at 0%. Spray choke cleaner at intake and STFT ...
February 26, 2009