Diagnose check engine. Found light stored code p0141 for O2 sensor heater circuit bank 1 sensor 2. Drivers side after the catalytic converter.
Checked both fuses and the under hood fuse compartment for the O2 sensor heaters and both checked good. Accessed bank 2 O2 sensor after the cat and found 02 sensor wiring had been rubbing on front drive shaft on the O2 sensor side. Checked the vehicle side for power to O2 sensor heater and tested good. O2 sensor will need to be replaced due to wiring damage on this Chevy Silverado.
2004 Express 1500 5.3
2004 Silverado 2500 HD 6.0
2004 Silverado 3500 6.0
2004 Sierra 1500 5.3
2004 Sierra 2500 HD 6.0
Customer Concern: Setting trouble codes P0141 and P0161.
Average Reported Mileage: 106957
Tests/Procedures: 1. With a cold engine, turn the key on engine off and monitor O2 voltage. Within 2 minutes, the voltage should drop to about 150 mV.
2. Verify there is 12 volts on the Pink wires to both O2's. If no voltage check the O2B fuse for blown.
3. If the fuse is blown check wiring to the sensor for chafing on the transmission or transfer case.
Tech Tips: Heater Current Test
• The PCM detects that the affected HO2S Heater current parameter is more than 1.375 amps or less than 0.25 amps.
• The above condition is met for 10 seconds.
Heater Resistance Test
Subscribe to my youtube channel here: goo.gl/j1pCfn
Connect with me:
FaceBook: goo.gl/rKg2Bv
Grease Monkey Art Gallery greasemonkeygallery.com/ by The Flat Rate Mechanic
Instagram: goo.gl/NCjRhM
Google Plus: goo.gl/6AyJz3
Website: flatratemechanic.com
For Promotional offers, consulting, training, sponsorships or other inquiries contact me at FlatRateMechanic1@gmail.com
The Flat Rate Mechanic. 25 year ASE Master Automotive Technician and Advanced level ASE certified
The Flat Rate Mechanic is a participant in the Amazon Influencer Program. Check out The Flat Rate Mechanics Tool Store on Amazon goo.gl/M8MpdC
 :
Disclaimer:
Due to factors beyond the control of The Flat Rate Mechanic, it cannot guarantee against unauthorized modifications of this information or improper use of this information. The Flat Rate Mechanic assumes no liability for property damage or injury incurred as a result of any of the information contained in this automotive repair video. The Flat Rate Mechanic recommends safe practices when working on cars or trucks with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this repair video. Due to factors beyond the control of The Flat Rate Mechanic, no information contained in this automotive repair video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained.
24 сен 2018
