P279B Pontiac Firebird OBD Code

OBD/2 P279B error code description and symptoms.

The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the hydraulic clutch or the pressure switch, the PCM or TCM will set code P279B

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.

P279B Pontiac Firebird Error Code Repair Process :

OBD P279B code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and p279b transfer case gear low incorrect ratio, while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to P279B malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for P279B and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.

Common Causes of Pontiac Firebird P279B OBD2 Code

A common cause of code P279B is the failure of P279B Transfer Case Gear Low Incorrect Ratio, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Faulty front heated oxygen sensor
Fuel tank leaking
Oil flow restriction in the oil passages or the variable camshaft timing (VCT) valve body

P279B is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

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

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P279B Pontiac Firebird OBD Code

P279B Pontiac Firebird Error Code Repair Process :

Common Causes of Pontiac Firebird P279B OBD2 Code

P279B code for other Pontiac cars