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GM Heated O2 Codes -- OBDII
Posted to Technical Discussion Forum on 5/18/1999 11 Replies

OK here we go.

97 Astro van 4.3W came in running good but with a steady service soon light on. The following codes were stored.

P0140 no o2 activity bank 1 sensor 2

P0141 O2 heater circuit bank 1 sensor 2

P0138 O2 sensor high bank 1 sensor 2

P0147 O2... Login to read more.

11 Replies Received (View Replies)