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P0153 Diagnostic Trouble Code Discussion for April 2014

Heated Oxygen Sensor (Bank 2 Sensor 1) Slow Response

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Trouble Ticket Help Requests for DTC P0153
Help Request Posted
1996 Cadillac DeVille 4.6L MIL Lamp on, P0153 VIN: 1G6KD52Y2T
P0153: Heated Oxygen Sensor (Bank 2 Sensor 1) Slow Response. Bank 2 runs lean predominately at idle, but is still leaner than bank 1 at higher rpms. Car idles smooth and runs well under all power requests. Symptom is indicative of vacuum leak , however multiple smoke tests have not revealed any leaks. Maf has been swapp...
April 23, 2014