C0686 Trouble Code

View C0686 obd/2 error code description and symptoms. C0686 engine photo

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

Difficulty Level (Expert)
Level
Repair Time (60 Min.)
Time
Cost Prediction : $ 80-120

C0686 Error Code Repair Process :

If your led #1 circuit short to battery check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C0686 and engine control unit are in charge of monitoring a bunch of different led #1 circuit short to battery, and if they get a reading that's a little out of whack, up pops the check engine light.

Wrench Tool C0686 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Common Causes of C0686

A common cause of code C0686 is the failure of LED #1 Circuit Short to Battery, but there are several other possible causes as well, such as ;

C0686 code for all cars

You can view according C0686 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C0686 Bristol 400 +C0686 Mercedes-benz 15 +C0686 Jowett 10 +C0686 Ford Tl50 +C0686 Rover Streetwise

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