P1905 Chevrolet Four Ninety OBD Code

OBD/2 P1905 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.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

P1905 Chevrolet Four Ninety Error Code Repair Process :

If your p1905 pressure control solenoid c intermittent short 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 P1905 and engine control unit are in charge of monitoring a bunch of different p1905 pressure control solenoid c intermittent short, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Chevrolet Four Ninety P1905 OBD2 Code

A common cause of code P1905 is the failure of P1905 Pressure Control Solenoid C Intermittent Short, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty starter motor
Foreign matter caught in fuel filler cap
Variable Valve Timing (VVT) circuit is open or shorted

P1905 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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P1905 Chevrolet Four Ninety OBD Code

P1905 Chevrolet Four Ninety Error Code Repair Process :

Common Causes of Chevrolet Four Ninety P1905 OBD2 Code

P1905 code for other Chevrolet cars