B0398 Trouble Code

View B0398 obd/2 error code description and symptoms. B0398 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.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code B0398, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code B0398 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

Difficulty Level (Soso)
Level
Repair Time (50 Min.)
Time
Cost Prediction : $ 30-110

B0398 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine B0398 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If pressure control solenoid b stuck on so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the pressure control solenoid b stuck on.

Wrench Tool B0398 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 B0398

A common cause of code B0398 is the failure of Pressure Control Solenoid B Stuck On, but there are several other possible causes as well, such as ;

B0398 code for all cars

You can view according B0398 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B0398 Mercedes Cl Class +B0398 Land Rover Series Iii +B0398 Hyundai Creta +B0398 Suzuki Ev +B0398 Ford Crown Victoria

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

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