2003 BMW 530i with engine code P0430

Question

2003 BMW 530i, take the car yesterday put new seals after 30 minutes caught the light has p0430 no leakage sensors are good they can be

Answer 1

P0430 Catalytic below threshold Bank 2

Many times especially on a BMW the 02 sensor is at fault,

​ You have 2 02 sensor for one Bank 2 , This is Bank 2 , the first 02 sensor is the upstream 02 sensor and the last one after the catalytic is the downstream 02 sensor.

​ If the catalytic convertor is faulty the rear 02 sensor will read below 0.650 volts. That is if the front 02 sensor is in fuel control

​ This is a faulty rear 02 sensor , note the 02 voltage is below 0.650 volts.

 

 

Comments

Mi sensor 02s b2 s2v is good. Is 0.750 volts the other 02s b2 s1v is 0.790 volts

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Correct the 02 sensor is good with this reading so is the catalytic convertor, clear the code this may just been set when the thermostat was replaced, you should not code a catalytic code or 02 sensor code,

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When the temperature sensor goes high and there is no overheating, this still affects the enginemanagement  you may even have a false P0430.

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Need help code p2096. Bank 1 bmw  535i 2009 xdrive new fuel pump and inyector

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