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2002 Mercedes-Benz C230

Question: code 410

Question

jayginnj, Ewing, NJ, November 30, 2009, 18:04
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 Rookie

i just got this car for $ months now n i cant figure out whats wronge w it it has a check engine light on n i feel vibrations in the stick shift and steering wheel its a kompressor mb 2002 manual n it has like a lost of acceleration n there is a funny noise coming from the exhuast when all this is going n then there is i time when it drives perfect i hit a speed bumpe a week before all this started happen at 25 mph and the code it give me is 410 secondary air injecton system can some one please help me out

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, November 30, 2009, 19:04
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     Master

    I just heard two fellows at the office at Repairpal talking about a similar Mercedes problem a few months ago I have forwarded this question to them in hopes one of them remembers the answer to this problem.

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  • Medium-star Best Answer
    backyard tech November 30, 2009, 21:34
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     Master

    Customer Concern: MIL on, DTC P0410 - secondary air injection low flow detected.
    Tests/Procedures: 1. Inspect all hoses on the air filter, supercharger, intercooler, Mass Airflow Sensor (MAF) etc., for loose clamps or leaks.

    2. Verify the supercharger belt is tight and in good condition.

    3. Check fuse K40F4 (15A) in the relay module in the underhood module box.

    4. Inspect vacuum hose connections to the air injection switchover valve Y32 on the front of the engine above the water pump. The output hose connects to the diverter valve which controls the secondary air injection flow to the engine. Disconnect the hose on the air injection diverter valve on the intake manifold from the supercharger outlet elbow. Use a hand vacuum pump to apply vacuum to the valve at the hose connection on Y32. With the engine running, exhaust noise should be present. The valve must hold vacuum. Reconnect hoses.

    5. Clear DTC's using a fully functional Mercedes-Benz compatible scan tool, and connect a Digital Multimeter (DMM) to Y32 on the Grey/Brown wire by back probing the connector, ground the common terminal. Start the engine when cold. The supercharger clutch should engage and voltage at Y32 should drop to 1v or less. Vacuum should be applied to the diverter valve.

    6. Recirculation air flap should be fully closed during the secondary air injection phase, also controlled by the Powertrain Control Module (PCM).
    Potential Causes: Carbon Buildup
    Diverter Valve
    Heated Oxygen Sensor (HO2S)
    Secondary Air Injection (SAI) Check Valve
    Secondary Air Injection (SAI) Hoses
    Secondary Air Injection Switchover Valve
    Supercharger

    Tech Tips: The powertrain control module uses the recirculation air flap to bypass excess boost during periods of deceleration to prevent excess wear on supercharger clutch. There is no position sensor on the flap.
    Diagnostic Codes: P0410

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