Restricted Exhaust

Restricted Exhaust

Test Description

The numbers below refer to the step numbers on the diagnostic table.
3. The exhaust system has very low back pressure under normal conditions. If the exhaust system is restricted, a significant increase in the exhaust pressure is noticed on the J 35314-A Exhaust Back Pressure Gauge.
Removing the heated oxygen sensor (HO2S) may set a DTC. When finishing this diagnostic table, be sure to clear all codes.
4. This step will isolate the catalytic converter from the remainder of the exhaust system.