C3494 Nissan Grand OBD Code

OBD/2 C3494 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.

C3494 Nissan Grand Error Code Repair Process :

For passenger door lock switch circuit shorted to ground 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. C3494 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 passenger door lock switch circuit shorted to ground with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Nissan Grand C3494 OBD2 Code

A common cause of code C3494 is the failure of Passenger Door Lock Switch Circuit Shorted to Ground, but there are several other possible causes as well, such as ;

Exhaust tube
Exhaust gas leaks
Faulty TCM or TCM programming
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1

C3494 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

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

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C3494 Nissan Grand OBD Code

C3494 Nissan Grand Error Code Repair Process :

Common Causes of Nissan Grand C3494 OBD2 Code

C3494 code for other Nissan cars