C2129 Volvo S90 OBD Code

OBD/2 C2129 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.

Gear changes are accomplished by a command from the TCM to energize the clutch actuator to release the clutch; after which various actuators inside the transmission disengage the current gear, and depending on current operating conditions, engage the next higher or lower gear ratio. All of this happens much faster than a human driver could change gears, and in most applications, gear changes are as smooth and seamless as on any fully automatic transmission.

C2129 Volvo S90 Error Code Repair Process :

For fuel pump secondary circuit low 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. C2129 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 fuel pump secondary circuit low with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Volvo S90 C2129 OBD2 Code

A common cause of code C2129 is the failure of Fuel Pump Secondary Circuit Low, but there are several other possible causes as well, such as ;

Dirty Oil
EVAP system hose leaking
Continuous oil flow to the VCT piston chamber
1Camshaft Position Sensor circuit poor electrical connection

C2129 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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C2129 Volvo S90 OBD Code

C2129 Volvo S90 Error Code Repair Process :

Common Causes of Volvo S90 C2129 OBD2 Code

C2129 code for other Volvo cars