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P0697 is a diagnostic trouble code (DTC) for "Sensor Reference Voltage “C” Circuit/Open". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The P0697 code is a generic powertrain code related to computer output circuit issues, including an internal computer failure. In this case, the engine control module (ECM) or other supporting control module has detected a fault with the sensor reference voltage “C” circuit.
Codes related to the P0697 include:
A code P0697 will be stored when a fault is detected in the sensor reference voltage “C” circuit. The ECM may not be the only control module, including the body control module or fuel injection control module, to detect this particular fault. The “C” denotes a specific area of the circuit.
The 5-volt reference signal is sent to or from various control modules through the controller area network (CAN), which helps various components communicate in the vehicle. Your vehicle may require several drive cycles with this particular failure before a code is stored.
Several problems may cause a P0697 code including:
Symptoms of a P0697 code may include:
A mechanic may use several methods to diagnose a P0697 trouble code, including:
It is always recommended to diagnose and repair codes in the order in which they are stored, as subsequent codes may simply be a symptom of a larger problem.
Because a vehicle’s safe driving operation most likely will be impacted due to faults that store a P0697 code, this code is considered a potentially serious code. When this code appears, it is recommended to immediately take your vehicle to your local service center or mechanic for repair and diagnosis.
Several repairs can fix a P0697 trouble code, including:
Due to the complexity of trouble codes related to the controller area network (CAN), it is recommended to seek professional assistance in diagnosing and repairing your vehicle when this code is stored.
Additionally, remember that modules other than the ECM may also report a P0697. Be sure to visually locate the “C” sector along the circuit and thoroughly diagnose any possible causes for the fault prior to repair.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.