1999 a6 p0432 p0411

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333 - 16 May 2009 18:02 GMT

I'm getting both of these codes now.

The right catalytic converter was replaced recently. And actually
may have been getting these codes even before I replaced the catalyti
converter...but I'm not sure.

Would a bad right oxygen sensor explain both of these codes (as well a
the bad catalytic converter)? I've heard that a vacuum leak migh
explain them as well....but I haven't been able to detect one (using th
carb and choke cleaner).

Any help would be greatly appreciated.

Thanks

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33

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Ecmbuster - 17 May 2009 01:41 GMT

P0411 - Secondary Air Injection System: Incorrect Flow Detecte
Possible Condition
Malfunction Indicator Light (MIL) ON

Possible Cause
Fuel Pump Relay (J17) fault
Hoses/Pipes to/between Components faulty/clogge
Secondary Air Injection Pump (V101) fault
Secondary Air Injection Pump Relay (J299) fault
Secondary Air Injection Solenoid Valve (N112) fault
Diverter Valves stuck in open or closed positio
Connection to diverter valves faulty

Possible Correction
Check Fuel Pump Relay (J17
Check Hoses/Pipes to/between Component
Check Secondary Air Injection Hoses/Pipes for Carbonization
Check Secondary Air Injection Pump (V101
Check Secondary Air Injection Pump Relay (J299
Check Secondary Air Injection Solenoid Valve (N112
Remove and test diverter valve
Run the readiness code as a final tes

P0432- Main Catalyst, Bank2 Efficiency Below Threshold
Possible Condition
Malfunction Indicator Light (MIL) ON

Possible Cause
Defective Cat, non OEM CAT, Defective O2
Check HO2S -G108- and O2S control (bank 2, sensor 1)
Possible Correction
Measure and test all O2 sensors - Fore and Af
Test the CAT temperatures with a lase
Run the readiness code as a final tes

(using the carb and choke cleaner) - not a good test! Use a smok
machine

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Ecmbuste

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