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)
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Repair Time (30 Min.)
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| Cost Prediction : $ 80-120 |
If your air suspension rf height sensor circuit short to ground 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 B2415 and engine control unit are in charge of monitoring a bunch of different air suspension rf height sensor circuit short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.
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B2415 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. |
You can view according B2415 DTC for your car model. We selected several models to see obd2 solutions click and view it.
| +B2415 Chevrolet Matiz | +B2415 Toyota Sprinter | +B2415 Fiat Panda 1 | +B2415 Lexus Lf | +B2415 Pinguin Pinguin |
Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.
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