P0685 is a diagnostic trouble code (DTC) for "ECM/PCM Power Relay Circuit Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
What Is An ECM Power Relay? ECM stands for engine control module - the computer that makes your entire car function on its own. The ECM power relay monitors and delivers power to the ECM which in turn decides how virtually every other component in your engine runs.
Code P2510 is for shorted or open ignition relay circuits and the most common fault is the ignition relay contacts either stick closed or the relay will not make contact when engaged. Search technical bulletins for shorted harnesses on some vehicles that may cause the code and a no start or stall while driving.
A P0687 code is stored when the PCM (powertrain control module) detects an incorrect, abnormal, or erratic voltage reading from the relay control circuit that supplies it with its power.
If the engine's control module (PCM) determines that the Intake Valve for cylinder number five is not Turning on or off the way it is being commanded, the PCM will set code P3435. A vehicle with this code should be taken in to a repair shop for diagnosis.
P2718 is an OBD-II generic code for a voltage problem with the transmission fluid pressure control solenoid and its signal being sent to the engine computer. The solenoid helps control transmission fluid pressure, and when the PCM detects a problem in the solenoid circuit, OBD code P2718 will flash.
Some technicians may find DTC P262B (Control Module Power Off Timer Performance) active or stored in history in the Engine Control Module (ECM). This condition may be caused by the engine cooling down quicker than what the ECM expects after the vehicle is shut off and then restarted.
The powertrain control module is referred to as the PCM. ECMs are in charge of regulating the engine. PCMs are in charge of controlling the powertrain. Engine control modules (ECMs) continually monitor engine characteristics and make modifications to guarantee peak performance.
When the ECM detects voltage from the relay one time, DTC P0690 sets and the SES indicator is illuminated. This DTC is supposed to indicate a stuck closed relay but engineering has determined that a software anomaly may cause it to falsely set on vehicles built prior to March 15, 2011.
The power distribution center, or fuse block, located under the hood houses most or all of the vehicle's fuses and relays. It contains a relay for the ECM that is powered up when the ignition key is turned to the on position. This ECM power relay acts as a switch that supplies power to the ECM.
ECM stands for Engine Control Module, and ECU is short for Engine Control Unit. These two acronyms represent the same component and are used interchangeably.
What repairs can fix the P0698 code? Electrical connectors, wiring and any components related to the "C'" circuit should be replaced or repaired if they were cited as problems during the diagnostic stage.
If the PCM sees that the DEF level is too low, code P203F is set. Additional warnings may be present on the instrument cluster. Failure to add DEF fluid may result in the engine not restarting until more DEF fluid is added. A vehicle with this code should be taken in to a repair shop for diagnosis.
Description : P1030 BMW Valvetronics Monitoring Sluggish Movement. Possible causes : – Faulty valvetronic motor. – Valvetronic eccentric motor harness is open or shorted. – Valvetronic eccentric motor circuit poor electrical connection.
What does OBD-II fault code P226B mean? The engine control module (PCM) uses sensors to determine if the Turbocharger/Supercharger is providing the requested amount of boost. If the PCM determines that the requested amount of boost is not being provided, the PCM will set code P226B.
The P2601 code is a general OBD-II diagnostic trouble code (DTC) that indicates a fault with the coolant pump control circuit range/performance.
The P1005 Chrysler code indicates that there is a communication error from the ECU (your cars on board computer) and the Manifold Tuning Valve on the intake manifold. This component is designed to provide input to the fuel system as conditions and variables change.