C1386 Trouble Code

View C1386 obd/2 error code description and symptoms. C1386 engine photo

Catalytic converters must be warm before they can work properly. On a cold start the PCM provides a rich mixture to keep the cold engine running.
All that extra fuel goes into the catalytic converter. But the exhaust isn't very hot, because, ah, the engine is pretty cold. GM has employed several strategies to fire up the catalytic converter quicker and reduce cold start emissions. One way is to use a secondary air pump that pumps outside air directly into the catalytic converter.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

C1386 Error Code Repair Process :

If your scp (j1850) invalid or missing data for traction control 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 C1386 and engine control unit are in charge of monitoring a bunch of different scp (j1850) invalid or missing data for traction control, and if they get a reading that's a little out of whack, up pops the check engine light.

C1386 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 C1386

A common cause of code C1386 is the failure of SCP (J1850) Invalid or Missing Data for Traction Control, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty front heated oxygen sensor
Foreign matter caught in fuel filler cap
Fuel filler cap remains open or fails to close

C1386 code for all cars

You can view according C1386 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C1386 Chevrolet Caprice 8

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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