P3691 Fiat Fiorino OBD Code

OBD/2 P3691 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.

P3691 Fiat Fiorino Error Code Repair Process :

If your left front vertical accelerometer 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 P3691 and engine control unit are in charge of monitoring a bunch of different left front vertical accelerometer circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Fiat Fiorino P3691 OBD2 Code

A common cause of code P3691 is the failure of Left Front Vertical Accelerometer Circuit Failure, but there are several other possible causes as well, such as ;

Dirty Oil
EVAP system hose leaking
Fuel pressure
Faulty ignition coil (s)

P3691 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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P3691 Fiat Fiorino OBD Code

P3691 Fiat Fiorino Error Code Repair Process :

Common Causes of Fiat Fiorino P3691 OBD2 Code

P3691 code for other Fiat cars