SOURCE: Error Codes P1684 and P0340
P0340
Camshaft position sensor circuit
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P1684
means the battery was disconnected(or had been drained to a low voltage) recently.
SOURCE: I have a diagnostic code
If I remember correctly, P0700 means the automatic transmission computer has a problem and
P1684 means the battery has been disconnected within the last 50 starts.
Hope this helps.
SOURCE: what does codes p0645 and p0481 mean on a 2004 dodge intrepid?
P0645 A/C Clutch relay circuit
P0481 high speed fan control relay circuit
SOURCE: what is code 1494 mean for 2001 dodge neon
P1494 Leak Detection Pump Switch or Mechanical Fault
Part of the early evaporative emission system. (Fuel tank fumes)
It’s there to allow the computer to run an integrity test of the fuel tank, lines and carbon canister’s ability to contain all of the fumes coming from the tank and all line associated with the system.
The code could be set for a number of reasons such as a faulty gas cap, cracked vacuum lines, solenoids & vent valves stuck to the pump itself.
It can be a very difficult fault to cure being it doesn’t take a very big leak anywhere in the system to set the code and that’s if it’s a leak and not an electrical or mechanical fault.
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, and/or
Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary
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