Question about Chrysler PT Cruiser
Replaced ecu and o2 sensors could this be a ground issue?
You have to check at the O2 sensor connectors that there is power and ground to the heater circuit. This will minimize you diagnostic time.
Posted on Mar 30, 2014
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Posted on Jan 02, 2017
bank 1 sensor 2 is the left downstream sensor (1/2) is located in the exhaust downpipe just after the mini-catalytic convertor, and before the main catalytic convertor. Now the meaning of this is that your not getting any 12+/12- heating on sensor, which means voltage is supplied to heat sensor up. You have a O2 sensor heater relay, but not getting problem with 2/2 sensor tells me you need to check/inspect the wiring for 1/2 sensor, open wiring for 1/2 sensor and inspect
Posted on Feb 07, 2010
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