U1979 Volvo S60 Ii OBD Code

OBD/2 U1979 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.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code U1979, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code U1979 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

U1979 Volvo S60 Ii Error Code Repair Process :

For air bag internal diagnostic monitor fault or system disarm fault 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. U1979 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 air bag internal diagnostic monitor fault or system disarm fault with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Volvo S60 Ii U1979 OBD2 Code

A common cause of code U1979 is the failure of Air Bag Internal Diagnostic Monitor Fault or System Disarm Fault, but there are several other possible causes as well, such as ;

Exhaust tube
Exhaust tube
Insufficient cylinders compression
Fuel pressure

U1979 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

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

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U1979 Volvo S60 Ii OBD Code

U1979 Volvo S60 Ii Error Code Repair Process :

Common Causes of Volvo S60 Ii U1979 OBD2 Code

U1979 code for other Volvo cars