P1709 Volkswagen T4 OBD Code

OBD/2 P1709 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.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

P1709 Volkswagen T4 Error Code Repair Process :

The scent may P1709 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such P1709, so if the inside of your car p1709 pnp switch out of self test range as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

Common Causes of Volkswagen T4 P1709 OBD2 Code

A common cause of code P1709 is the failure of P1709 PNP Switch Out Of Self Test Range, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty ignition coil (s)
Faulty select solenoid
Lack of fuel

P1709 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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P1709 Volkswagen T4 OBD Code

P1709 Volkswagen T4 Error Code Repair Process :

Common Causes of Volkswagen T4 P1709 OBD2 Code

P1709 code for other Volkswagen cars