Question

2002 Chrysler PT Cruiser 2.4L, how do I fix p1684 p0320 p0122?

Answer 1

Do you have other symptoms besides the engine codes?

P1684 means the battery was disconnected within the last 50 key starts. Check to see if your battery terminals are on tight.

Start by checking the battery voltage, if the battery is OK, then clear the codes and check what code comes back first.

P0122 CHRYSLER Code - Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input
Read more: https://www.autocodes.com/p0122_chrysler.html

P0320 CHRYSLER Code - No Crank Reference Signal At PCM
Read more: https://www.autocodes.com/p0320_chrysler.html

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