P1004 Opel Signum OBD Code

OBD/2 P1004 error code description and symptoms.

The input turbine speed sensor detects rotation of the input shaft of the input shaft speed sensor transmission. The computer uses that information, along with the output shaft speed sensor to determine if the transmission is operating according to plan. If the computer detects a difference between the input shaft speed , and the expected output shaft speed, it will adjust transmission pump pressure to prevent clutch disc slip. If adding pressure doesn't solve the problem, it will set a trouble code.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

P1004 Opel Signum Error Code Repair Process :

If your park lamp flash relay circuit failure 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 P1004 and engine control unit are in charge of monitoring a bunch of different park lamp flash relay circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Opel Signum P1004 OBD2 Code

A common cause of code P1004 is the failure of Park Lamp Flash Relay Circuit Failure, but there are several other possible causes as well, such as ;

Faulty Air Flow Meter
Faulty Fuel injector
Faulty front heated oxygen sensor
Variable Camshaft Timing (VCT) position circuit is open or shorted

P1004 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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P1004 Opel Signum OBD Code

P1004 Opel Signum Error Code Repair Process :

Common Causes of Opel Signum P1004 OBD2 Code

P1004 code for other Opel cars