P2891 Trouble Code

View P2891 obd/2 error code description and symptoms. P2891 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.

In most cases, the TCM is integrated into a single housing with the PCM. Nevertheless, the section of the module which controls (automatic) transmission function may be powered up separately. In any case, the TCM is typically powered using switched (only present with the ignition switch in the ON, start, or run position) voltage. This circuit is normally equipped with a fuse, fusible link, and/or a relay. Frequently, the PCM and TCM are powered using the same relay albeit by separate circuits. Access to a reliable vehicle information source will yield necessary details of the TCM power circuit for the specific vehicle in question.

Difficulty Level (Soso)
Level
Repair Time (30 Min.)
Time
Cost Prediction : $ 25-45

P2891 Error Code Repair Process :

For seat driver front down circuit short to ground check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. P2891 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks seat driver front down circuit short to ground with your car's computers to find out exactly what's prompting the light to turn on.

Wrench Tool P2891 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Common Causes of P2891

A common cause of code P2891 is the failure of Seat Driver Front Down Circuit Short To Ground, but there are several other possible causes as well, such as ;

P2891 code for all cars

You can view according P2891 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P2891 Invicta 12 +P2891 Mercedes C 200 +P2891 Tvr Vixen +P2891 Volkswagen 1300 +P2891 Tatra T77

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

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