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jonesrussell
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OBDII Code P1128 ND???
jonesrussell replied to LVDell's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)
I have an '01 C4 coupe with about 55,000 miles. I recently added an aftermarket K&N filter and airbox. About a week after the change the CEL light came on with the code P1128. I reset the code a couple of times and the code has reappeared so I'm assuming the engine management software either won't cope or I have a faulty O2 sensor or some other problem - duh. My question is what to do. I could re-install the stock airboxand filter and see if the code goes away, change the O2 sensors, update the EM software, or look for leaks etc as proposed above. With 4 O2 sensors @ $125 each the O2 replacement could get expensive and might not solve the problem. The new airbox/filter has really boosted the perfromance and I'm planning on adding BB headers so I hate to take it off. Any guidance you could give me would be appreciated. Russell -
OBDII Code P1128 ND???
jonesrussell replied to LVDell's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)