Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Test A

PINPOINT TEST A: DTC P0442 SMALL LEAK IN EVAP SYSTEM SMALL AS 1 MM (0.040 IN)], DTC P0456 VERY SMALL LEAK IN EVAP SYSTEM SMALL AS 0.5 MM (0.020 IN)] OR DTC P0457 MISSING OR LEAKING FUEL FILLER CAP


Test A1-A3:






Test A4-A7:






Test A8-A10:






Possible Causes
- DTC P0442, P0456 or P0457 can be generated by:
- Loose or missing fuel filler cap.
- Loose or damaged connections to fuel vapor hoses, tubes or connections.