B0940 Simca 5 OBD Code

OBD/2 B0940 error code description and symptoms.

HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw.
The test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S. Water in harness connector. Open VPWR circuit. Open GND circuit. Low battery voltage. Corrosion or poor mating terminals and wiring Damaged HO2S heater. Damaged PCM.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

B0940 Simca 5 Error Code Repair Process :

For pressure control solenoid a short circuit check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. B0940 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks pressure control solenoid a short circuit with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Simca 5 B0940 OBD2 Code

A common cause of code B0940 is the failure of Pressure Control Solenoid A Short Circuit, but there are several other possible causes as well, such as ;

Exhaust tube
Erratic camshaft position due to low oil pressure
Insufficient cylinders compression
Failures of clutch motion/travel sensors.

B0940 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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B0940 Simca 5 OBD Code

B0940 Simca 5 Error Code Repair Process :

Common Causes of Simca 5 B0940 OBD2 Code

B0940 code for other Simca cars