P1273 Holden Vt OBD Code

OBD/2 P1273 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 P1273 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.

P1273 Holden Vt Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P1273 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 temperature select failure 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 temperature select failure.

Common Causes of Holden Vt P1273 OBD2 Code

A common cause of code P1273 is the failure of Temperature Select Failure, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty starter motor
Incorrect Positive Crankcase Ventilation (PCV) hose connection
Open or short in the CMP sensor circuits

P1273 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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P1273 Holden Vt OBD Code

P1273 Holden Vt Error Code Repair Process :

Common Causes of Holden Vt P1273 OBD2 Code

P1273 code for other Holden cars