Mercedes A Class P0139 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 A Class P0139 Code Meaning :

When you check Mercedes A Class car engine light came on code P0139 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However manufacturer may have a different definition for the P0139 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0139 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0139 OBD-II Trouble Code The Heated Oxygen Sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) P0139 code.

Reason For P0139 Code

The reason of P0139 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

P0139 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.

P0138 Previous Engine Trouble Code For Mercedes A Class

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