Mercedes-benz 300 U1990 Engine Trouble Code
Theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that's usually the cost of parts because the labor is relatively simple.
Mercedes-benz 300 U1990 Code Meaning :
OBD-II Diagnostic Network (U) Trouble Code For Engine
Fuel And Air Metering
Engine Oil Temperature Sensor Malfunction
Cylinder 10 Contribution/balance Fault
Reverse Input Circuit

When you check Mercedes-benz 300 car engine light came on code U1990 the reason should be . However manufacturer may have a different definition for the U1990 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.
U1990 OBD-II Diagnostic Network (U) Trouble Code Description
U1990 engine trouble code is about Reverse Input Circuit.Reason For U1990 Code
The reason of U1990 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.U1990 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.
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