B2979 Austin Allegro OBD Code

OBD/2 B2979 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.

Circuit High Input codes like B2979 are mostly caused by defective alternators that develop excessive voltages, although there may be other causes as well, such as short circuits that 'leak' current into a particular system from other, unrelated systems that work on higher voltages. Note that in the case of short circuits that leak power into a control circuit, there is likely to be other, seemingly unrelated trouble codes present along with the code(s) being investigated. Diagnosing a 'high input' code will always involve a thorough testing of the charging system as a first step, followed by measures to isolate the system from all other possible sources of power during resistance, continuity, and reference voltage tests.

B2979 Austin Allegro Error Code Repair Process :

If your power steering pressure sensor circuit intermittent 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 B2979 and engine control unit are in charge of monitoring a bunch of different power steering pressure sensor circuit intermittent, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Austin Allegro B2979 OBD2 Code

A common cause of code B2979 is the failure of Power Steering Pressure Sensor Circuit Intermittent, but there are several other possible causes as well, such as ;

Dirty Oil
1Camshaft Position Sensor circuit poor electrical connection
Dirty Oil
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection

B2979 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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B2979 Austin Allegro OBD Code

B2979 Austin Allegro Error Code Repair Process :

Common Causes of Austin Allegro B2979 OBD2 Code

B2979 code for other Austin cars