Help my 2001 sebring is giving me two code, p0340 and p1684 can you tell me what they are for

all codes are OBDll and are available on line free. personally I would replace battery. Batteries often fail during the summer, but appear during winter as it takes more power to start cat.

https://mechanicbase.com/trouble-code/p1684/
https://www.yourmechanic.com/article/p0340-obd-ii-trouble-code-camshaft-position-sensor-circuit-malfunction-by-jamahl-walker

P1684 CHRYSLER - Battery Power To Module Disconnected
https://www.autocodes.com/p1684_chrysler.html

P0340 CHRYSLER - Camshaft Position Sensor Circuit Bank 1 Sensor 1
https://www.autocodes.com/p0340_chrysler.html

P1685 CHRYSLER - Invalid SKIM Key https://www.autocodes.com/p1685_chrysler.html

P0340 is cam position sensor. P1685 is for the key(has a chip in it) P1684 is battery has been disconnected. If the engine will still crank then codes P1684 & P1685 are probably old codes. So if the car will still crank, lets forget about those codes and focus on P0340 A bad cam position sensor will cause the engine to die and not allow it to start back up. Replace the cam position sensor and clear the code and the car should start up.

P1684 The battery has been disconnected within the last 50 starts.

P0340


This indicates that a problem was detected in the camshaft position sensor circuit. Since it says circuit, that means the problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM. Don't just replace the CPS (camshaft position sensor) and think that will definitely fix it.
Symptoms Symptoms can include:

• Hard starting or no start
• Rough running / misfiring
• Loss of engine power

Causes A code P0340 could mean one or more of the following has happened:

• a wire or connector in the circuit could be grounded/shorted/broken
• the camshaft position sensor may have failed
• the PCM may have failed
• there exists an open circuit
• the crankshaft position sensor may have failed

Possible Solutions With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:

• Visually inspect all the wiring and connectors in the circuit
• Check for continuity in the circuit wiring
• Check the operation (voltage) of the camshaft position sensor
• Replace the camshaft position sensor as required
• Check the crankshaft position circuit as well
• Replace circuit wiring and/or connectors as required
• Diagnose/replace the PCM as required

you can call auto parts store like auto zone and they can tell you what code means

P0340 Camshaft Position Sensor "A" Circuit Bank 1 or Single Sensor

P0700 Transmission Control System (MIL Request)

The code P1684 is real easy. The computer is stating that the battery has been disconnected within the last 50 starts.

something has triggered the fail safe ,could be anything from a tail light bulb out to low brake fluid level,but i could be wrong of course and no doubt i am.europeon cars use encrypted software thats designed to be dealer only, american cars ??dont know about this but iam assuming their standard as lots of boy racer ,sunday car mechanics type tools for fault reading??here on a europeon car they tell you your not connected ??connection pins in different places and encrypted software.. makes any fault a dealer only job and lots of money,just to connect computer is around 80€ before you evan pay labour .

Code 1684 metering oil pump temperature sensor circuit malfunction.
Have you checked the alternator? It sounds like it is not charging the battery. countrycurt0

P0340
Camshaft position sensor circuit

• Most likely cause : Camshaft position sensor failed.

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P1684
means the battery was disconnected(or had been drained to a low voltage) recently.

P0442, P0455 AND P0456 are all evaporative leak monitor test failures (small, medium and large leaks). These codes appear anytime the integrity of the air space above the fuel or the lines to/from the vapor canister or purge valve. If there is no damage to the canister, check the lines that run under the van from the fuel tank and canister to the purge valve (under the hood). Also, check to make sure that the hoses are not split or disconnected where they connect to the purge valve. The P1684 is abit more confusing. This is not a valid DTC for your vehicle. It's possible the scanner the shop you went to is an OTC scanner that is reporting a false code. It's also possible they wrote it down incorrectly. The closest thing that makes any sense is a P1486 which would indicate a pinched hose in the same monitor system as the other 3 codes. Best of luck!