B0734 Trouble Code

View B0734 obd/2 error code description and symptoms. B0734 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.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

B0734 Error Code Repair Process :

For fan secondary low with low fan on 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. B0734 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 fan secondary low with low fan on with your car's computers to find out exactly what's prompting the light to turn on.

B0734 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 B0734

A common cause of code B0734 is the failure of Fan Secondary Low with Low Fan On, but there are several other possible causes as well, such as ;

Dirty Oil
Dirty Oil
Faulty Intake Valve Timing Control Solenoid Valve
Damaged camshaft position (CMP) sensor

B0734 code for all cars

You can view according B0734 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B0734 Alfa Romeo 146

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

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