I have had a PO442 code for years. The car has a new OEM gas cap and also replaced a bunch of vacuum lines. Any suggestions on what to look for next.
After running a Mode 6 scan with a bluedriver code reader, i found a failed sensor. Any suggestions on what this is telling me?
ID: 02 03. Min: -. Val: 0x23. Max: 0x20. Lean to rich sensor threshold voltage (constant). Status: Complete and Fail.
Thanks in advance.
Brian
Check the gas fill tube for pitting corrosion else a new cap won't seal... easy first step. Then replace the evap sensor. Still worthwhile to do a proper smoke test...
That ID code, hex values and lean to rich being slow or constant value usually relate to the downstream O2 going bad and not the 442 evap code. What's your LTFT values?
Thanks for replying.
At idle, LTFT bank 1 is 3.1%, bank 2 6.2%. The car was fully warm at 194 degrees. Short term were around 0%.
PO442 and P0456 errors active.
Still showing with scanner. Value number changed compared to original post. ID: 02 03. Min: -. Val: 0x3B. Max: 0x22. Lean to rich sensor threshold voltage (constant). Status: Complete and Fail.
New error: ID: 02 04, min: -, Val 0x2E, Max 0x0B. Lean to rich sensor threshold voltage (constant). Status: Complete and Fail.
Brian