P1990 Trouble Code

View P1990 obd/2 error code description and symptoms. P1990 engine photo

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.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code P1990, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code P1990 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

Difficulty Level (Soso)
Level
Repair Time (50 Min.)
Time
Cost Prediction : $ 90-120

P1990 Error Code Repair Process :

The scent may P1990 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 P1990, so if the inside of your car secondary air injection system incorrect flow detected 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.

Wrench Tool P1990 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.

Common Causes of P1990

A common cause of code P1990 is the failure of Secondary Air Injection System Incorrect Flow Detected, but there are several other possible causes as well, such as ;

P1990 code for all cars

You can view according P1990 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P1990 Maserati 151 +P1990 Lola Gt +P1990 Oldsmobile 88 +P1990 Standard Ensign +P1990 Talbot Sunbeam

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

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