Mercedes Sl 55 P3990 Engine Trouble Code

When your car's 'Mercedes Sl 55 P3990 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.

Mercedes Sl 55 P3990 Code Meaning :

When you check Mercedes Sl 55 car engine light came on code P3990 the reason should be . However manufacturer may have a different definition for the P3990 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P3990 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P3990 engine trouble code is about Reverse Input Circuit.

Reason For P3990 Code

The reason of P3990 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

P3990 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.

P398F Previous Engine Trouble Code For Mercedes Sl 55

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