B202B Nissan 350z OBD Code

OBD/2 B202B error code description and symptoms.

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 long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

B202B Nissan 350z Error Code Repair Process :

If your heater coolant temp sensor circuit short to gnd 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 B202B and engine control unit are in charge of monitoring a bunch of different heater coolant temp sensor circuit short to gnd, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Nissan 350z B202B OBD2 Code

A common cause of code B202B is the failure of Heater Coolant Temp sensor circuit Short to GND, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty Crankshaft Position Sensor (POS)
Clogged or faulty fuel injector (s)
Intake Valve Timing Control Solenoid Valve circuit poor electrical connection

B202B 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.

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

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B202B Nissan 350z OBD Code

B202B Nissan 350z Error Code Repair Process :

Common Causes of Nissan 350z B202B OBD2 Code

B202B code for other Nissan cars