B3135 Trouble Code

View B3135 obd/2 error code description and symptoms. B3135 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.

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

B3135 Error Code Repair Process :

For lack of ho2s21 switch - sensor indicates lean 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. B3135 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 lack of ho2s21 switch - sensor indicates lean with your car's computers to find out exactly what's prompting the light to turn on.

Wrench Tool B3135 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Common Causes of B3135

A common cause of code B3135 is the failure of Lack Of HO2S21 Switch - Sensor Indicates Lean, but there are several other possible causes as well, such as ;

B3135 code for all cars

You can view according B3135 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B3135 Bmw 320 +B3135 Ferrari F399 +B3135 Austin 3 +B3135 Bmw B12 +B3135 Bmw Convertible

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

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