How To Fix GM O2 Sensor Heater Circuit Malfunction: P0141, P0155, P0161: 1st Gen GMC Sierra '88-'98
Links Below: How to diagnose and correct GM O2 sensors Diagnostic Trouble Codes indicating a heater circuit problem with this 1997 GMC 1500 with the 5.7 (350 cid) engine: Multiple O2 sensor heater circuit failures, P0153 / P0141 / P0155 / P0161. Once corrected, I end up with another DTC, P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control. This might cause additional O2 sensor problems.
The diagnosis process I use will work for all cars with 4-wire O2 sensors.
00:00 Intro: O2 Sensor Diagnostic Trouble Codes, GMC 1500
00:19 GM / GMC O2 Sensor Heater Circuit Failure P0153, P0151, P0155 & P0161
00:34 How To Test O2 Sensor Performance
01:43 Explanation of Operation of Upstream & Downstream Oxygen Sensors
02:54 O2 Sensor Heater Circuit Function
04:11 How To Test O2 Sensor Wiring Harness
07:03 GMC 1500 P0125 DTC: Insufficient Coolant Temperature For Closed Loop Fuel Control
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The demonstration and any content contained in this video is for informational purposes only. Driving Intelligence makes no warranty, express or implied, regarding the effectiveness or safety of the contents of this video. In no way should the contents of this video, including the tools used, be repeated or tried by anyone. Viewers should only seek the help of a trained professional located at a licensed auto repair shop for any fix, modification, alteration, or change to their vehicle. Driving Intelligence shall not be liable for any injury, damage, or loss to any person or property that may result from use of the tools, equipment, or content contained in this video. The links on this video to products are for informational purposes only and in no way are an endorsement of the safety or effectiveness of the particular product. Viewer agrees to release, waive, and discharge Driving Intelligence or anyone affiliated with Driving Intelligence from any and all liability, claims, demands, actions, and causes of action whatsoever arising out of or related to any loss, damage, or injury, including death, that may be sustained by the viewer, or to any property belonging to viewer, regardless of whether the loss is linked to the use of the contents of this video, or otherwise and regardless of whether such liability arises in tort, contract, strict liability, or otherwise, to the fullest extent allowed by law.
#o2sensor #p0141 #p0161 #p0155 #heatedo2sensor
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