Code P0100 Mercedes W 168 / A 140

There was a time when my mercedes benz A 140 having a problem :

1. Loose of power
2. Stalling intermittently when car is slowing down or stop, rpm 500 then dropped into stall.

So I went to garage to have star diagnostic, the error code was  P0100, more detail as below :

P0100-001 There is a sporadic fault in component B2/5 (Hot film mass air flow sensor)
P0100-004 B2/5 (Hot film mass air flow sensor) The signal voltage is too low

Get from www.autocodes.com, the code P0100 means mass air flow sensor error.

Possible causes
- Faulty mass air flow sensor
- Intake air leaks
- Dirty mass air flow sensor
- Dirty mass air filter
- Mass air flow sensor harness is open or shorted
- Mass air flow sensor circuit poor electrical connection


Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine stall
- Engine running rough
- Excessive fuel consumption
- Excessive smoke


From above possible cause, my made simple opinion, I thought there was a problem in connection of wire, so I did clean and tightening the plug and ecu cable. the result was gave effect, the power was back but was still not strong enough.

I made another scan diagnostic after that, and the error code was successfully deleted, the rpm was 800 and more. but the air mass voltage was 0.

Mercedes W 168 / A 140 Parts

1 Body and main parts
        1.1 Doors
        1.2 Windows

2 Electrical and electronics
        2.1 Audio/video devices
        2.2 Car Video Accessories
        2.3 Charging system

• Alternator

        2.4 Electrical supply system
        2.5 Gauges and meters
        2.6 Ignition electronic system
        2.7 Lighting and signaling system
        2.8 Sensors
        2.9 Starting system
        2.10 Switches
        2.11 Wiring harnesses
        2.12 Miscellaneous

3 Interior
        3.1 Floor components and parts
        3.2 Other components
        3.3 Car seat

4 Powertrain and chassis
        4.1 Braking system
        4.2 Engine components and parts
        4.3 Engine cooling system
        4.4 Engine oil system
        4.5 Exhaust system
        4.6 Fuel supply system
        4.7 Suspension and steering systems
        4.8 Transmission system

5 Miscellaneous auto parts
        5.1 Air conditioning system (A/C)
        5.2 Bearings
        5.3 Hose
        5.4 Other miscellaneous parts

This is all about Mercedes W 168

If you are interest to beautiful car ever (from my view) Mercedes Benz W 168, specially A Class 140. You just found the right site which expose content related to Mercedes Benz A 140 information.

Please don't be hesitate to explore more :

Mercedes Benz A 140 Parts

Mercedes Benz A 140 Service

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