P0688 chrysler

Ok, so my intrepid is stumping me hard on this.

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P0688 chrysler

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. The PCM uses the power relay sense circuit to monitor the voltage of the power relay. If the PCM detects an open power relay sense circuit, it will store a code P and may illuminate the malfunction indicator lamp MIL. A P code should be considered severe and addressed accordingly. Delayed or no start Inoperative electrical accessories Engine drivability issues. You will also need a reliable source of vehicle information that provides diagnostic flow charts, wiring diagrams, connector face views, connector pin-out charts, and component locators. Additionally, you will require component and circuit testing procedures and specifications. All of this information is necessary for a successful diagnosis of a code P Start by connecting the scanner to the vehicle diagnostic port and retrieving all stored codes and freeze frame data. Make a note of this information as it may be useful if the code is intermittent.

Remember me. This is the first BIG issue i've had with it.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. I hope this finds you all in great health! Ran into an issue with my Rubicon TJ and I am completely stumped, really hoping to get this back up and running.

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.

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. If the PCM power relay fails, your vehicle will not run properly.

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Sign up. Your symptoms sound familiar to what was happening with my Dakota when it still belonged to my brother. Once you have the relevant information, test all system fuses and relays to ensure that the PCM power supply relay is receiving battery voltage. The Dodge Hornet. However, I do not think any sensors except the crank sensor will deactivate the ASD but even if it could it would be done by the PCM opening the ground path to the relay as you know. Check this one too: You Tube. Consult your vehicle information source for any technical service bulletins TSB that match the stored code, vehicle year, make, model, and engine , and exhibited symptoms. Any help will be appreciated. She said it clicked 2 times. If the power supply relay output circuit voltage is not adequate, suspect that the relay is defective. Log in. The output signal also supplies the ECM with vehicle data.

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. So, there could be issues regarding the engine due to poor power supply, and you may not even be able to start your car after some time.

This is an older thread, you may not receive a response, and could be reviving an old thread. If you search those codes you will find a lot of info but I think when getting all 4 the solution will most always be a PCM replacement. It took a good 1. Jeep Wagoneer Forum. It was sporadic that it would do this. I'm a little confused here While we always recommend seeking professional mechanical assistance to resolve this issue, if that is not possible, we offer the option to permanently delete this specific DTC. As you can see I'm clearly losing my mind here. Unfortunately that would indicate a PCM problem. I imagine most states are similar.