Having problems with your 1999 Chevrolet Malibu ?

Troubleshooting po133 slow response (heated oxygen sensor bank 1 aasensor 1) the powertrain control module uses the oxygen aasensor to calculate the air/fuel ratio in the aaexhaust.

Posted / edited by AnonymousUser on : 18-03-2019

Answers :

Replace any upstream O2 Sensors with 100,000 miles
on them or codes as you have

Leave the downstream monitors
Repair Help & Product Troubleshooting for 1999 Chevrolet Malibu

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