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P2165 is a diagnostic trouble code (DTC) for "OBD-II Throttle/Pedal Pos Sensor C Maximum Stop Perf". 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 code P2165 means that there is a malfunction with the “C” pedal position sensor circuit.
The vehicle’s PCM (powertrain control module) monitors the throttle pedal position sensors. If it stores a P2165 code, then it has detected that the “C” throttle pedal position sensor is malfunctioning.
There could be a number of reasons for this code being stored by the PCM:
If none of the above seems to be the underlying issue, the PCM itself could be malfunctioning, but this is very rare.
In some models, the problem has to be detected more than once before the Check Engine light will be activated. When this happens, the P2165 code will actually show as pending on the OBD-II scanner. Otherwise, the light is a pretty typical symptom.
There are worse symptoms, though, like an engine that struggles to accelerate or can’t do so at all. The driver may notice black smoke coming from the exhaust when they start the vehicle. Some won’t even be able to start their vehicles at all or, if they do, the car will quickly stall. When idling, the automobile might misfire.
A qualified mechanic will begin diagnosing the problem by using an OBD-II scanner to pull all the stored codes. Unless there are other codes stored that speak to the underlying issue, the technician will move to inspecting the throttle actuator control motor, throttle position sensor, throttle position actuator, and pedal position sensor.
If those are all fine, they’ll want to move on to examining the wiring or connectors in the CAN Bus harness or throttle actuator motor.
Code P2165 can be misdiagnosed a number of ways as, at its root, the issue is simply a problem with communication. This can make it difficult to find the true issue behind it. When the code is accompanied by almost any other, many mechanics will take for granted that the two are related, so they’ll address the other code and simply assume this will take care of the P2165 code as well. If they don’t do another scan, they may send their customer back on the road without having ever addressed this other problem.
The problem is a pretty serious one when you consider how it can make an automobile impossible to drive. Even if the owner is able to get it to start, the malfunctioning sensor will most likely keep problem causing problems that make driving inconvenient, to say the least.
The most common repair will simply be to fix the malfunctioning sensor or just replace it. Otherwise, the mechanic will do some combination of the following:
As code P2165 often coincides with others and, as we mentioned above, this can sometimes lead to a misdiagnosis, it’s important that the codes found during a scan be addressed one at a time in order.
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.