Mercedes A Class P0138 Engine Trouble Code

When your car's 'Mercedes A Class P0138 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 A Class P0138 Code Meaning :

When you check Mercedes A Class car engine light came on code P0138 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However manufacturer may have a different definition for the P0138 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0138 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0138 OBD-II Trouble Code The Heated Oxygen Sensor 2 (HO2S) (Rear O2 Sensor), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture P0138 code.

Reason For P0138 Code

The reason of P0138 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

P0138 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.

P0137 Previous Engine Trouble Code For Mercedes A Class

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