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A po1685 is a wrong key message recieved from the skim you can try .dissconect the battery and hold the two termanals togeather for five minutes and use a diffrant key after that tow it to the dealor
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Then the PCM did not have the SKIM disabled. As you're aware, the P1685 means you have an invalid key, so the PCM is still looking for a signal from the SKIM module that a valid key is inserted.
Dodge Ram 1500 error code p1df3 P1DF3 Meaning
The Transmission Control Module (TCM) receives the status of the initialization state from the ESM on the Controller Area Network (CAN) bus while evaluating a counter in the TCM to determine if the initialization time is excessive.
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You are getting a fault message from the PCM that the wrong ignition key was used. This is part of the vehicle's onboard security system. This is part of the immobilizer system.
Code 1684 says the computer has lost battery voltage in the last 50 starts, and code 1685 means the security code in the key is not valid. You may have to have the computer flashed by the dealer to match the original settings in the original computer.
PO442 means you have a small leak in your EVAP system. Most common cause is a bad gas cap, replace the gas cap with a factory gas cap,after market fail or does not conform to the OEM EVAP system. Other cause would be small leaks in the EVAP vacuum lines.
P0445 is also related to the EVAP system and has detected a large leak in the system. Start with the gas cap as mentioned above.
P1685 Is an issue with the ignition not recognizing the ignition keys and the car's ignition immobilizer my activate leaving the car not being able to start. That's going to have to be a Dealer repair. Good luck and hope this helps.
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