P0688 chrysler

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Although it is a generic code, the specific repair steps may vary depending on the year, make, model, and powertrain configuration of the vehicle. When a code P is stored, it indicates that the powertrain control module PCM has detected an abnormality in the relay that supplies it with voltage. In this case, the relay sensor circuit is open, which can be interpreted as disconnected. It is a contact type relay that is activated by a signal wire from the ignition switch. This type of relay typically has a five-wire design. One wire carries constant battery voltage, another wire is for ground, a third wire carries a signal from the ignition switch, a fourth wire supplies voltage to the PCM, and the fifth wire is the power relay sense circuit.

P0688 chrysler

Ok, so my intrepid is stumping me hard on this. It will crank and start perfectly fine. Shut it off, sit for a sec, crank and crank. Key off and back on, starts hard but runs perfect. Then it will start fine a few times. I had this issue before vacation, and coming back I jumped in it and it fired right up no hesitation. I moved it and it started right up, this morning, and all it would do is crank. Beat me to death to swap out the crank sensor. I swapped in one I pulled from the yard. Then nothing. Please help!!!! Let me know your thoughts

Start right away, no registration needed. Once you have the p0688 chrysler information, test all system fuses and relays to ensure that the PCM power supply relay is receiving battery voltage. Unfortunately that would indicate a PCM problem.

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P is a relatively rare OBD2 trouble code. While any car or truck can have this code, it is most prevalent in vehicles made by Chrysler. If your vehicle is still running with this code, we strongly recommend against driving with it. If the PCM power relay fails, your vehicle will not run properly. They stand for engine control module and powertrain control module, respectfully. When you have P, it has detected an open circuit. An open circuit is a circuit that has not been completed. With this code, most of the time, the engine will not start or run. Remember, the circuit that senses the voltage at the power relay is open.

P0688 chrysler

P is a relatively rare OBD2 trouble code. This includes the Chrysler PT Cruiser. If your PT Cruiser is still running with this code, we strongly recommend against driving with it.

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If you find a relevant TSB, it may provide helpful diagnostic information. Jump to Latest Follow. Additionally, you will require component and circuit testing procedures and specifications. Any input on this? Full throttle to the solution. Although it is a generic code, the specific repair steps may vary depending on the year, make, model, and powertrain configuration of the vehicle. Check this one too: You Tube. In this case, the relay sensor circuit is open, which can be interpreted as disconnected. If the PCM enters readiness mode, the code is intermittent and will be more difficult to diagnose. The PCM uses the power relay sense circuit to monitor the voltage of the power relay. This is an older thread, you may not receive a response, and could be reviving an old thread.

If this happens to your ride, we get your concern, but the key piece of advice is not to drive around too much with the code and figure out a solution quickly. Find out more about OBD2 codes research process.

I would like to clean mine but dont know what it looks like and how to clean it. Quote message in reply? First time ever seeing these codes. So not sure how one would affect the other. Free Registration. Not going to be able to check out the jeep until Friday. That has other grounds as well. Find all posts by flamaui. Quick Reply: sebring 2. And it hasn't acted that way for me in the 2 years I've been driving it. Although, they already replaced the ECM and it did not fix the problem. Not sure what this tells me? If you are interested in this option, please upload your ECU file to our portal. Recommended Communities.