S80 OBD Codes
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11-11-2009, 10:15 AM
Join Date: May 2009
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#2
11-15-2009, 11:51 AM
P0422 Main Catalyst Efficiency Below Threshold (Bank 1)
P0423 Heated Catalyst Efficiency Below Threshold (Bank l)
If the ECU reads aprox the same signal from the before and after cat means that the after cat O2 sensor is working, but your cat lost the efficiency. Do you have more than 80 000 miles on the original ( good quality ) cat?? time to change it
P0423 Heated Catalyst Efficiency Below Threshold (Bank l)
If the ECU reads aprox the same signal from the before and after cat means that the after cat O2 sensor is working, but your cat lost the efficiency. Do you have more than 80 000 miles on the original ( good quality ) cat?? time to change it
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