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Heater not working and OBD codes

Tiny
JR47
  • MEMBER
  • 2000 CADILLAC ESCALADE
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 183,762 MILES
The CEL is on for the codes P0161 and P0141 and the heater control that has the different levels that control how fast the air blows out doesn't work. What do I need to do to fix this and can I get a diagram of where those sensors are located if possible.
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Monday, December 28th, 2015 AT 6:07 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The codes are for O2 sensors behind converters. It is bank 1 &2 we don't have diagrams for that for heater control check the wiring leading to blower it may be burnt up. There is a repair harness /resistor for it if it'smanual control. But check fuses both under hood and in car as well as blower relay under hood on top of heater housing. Then get it scanned for codes for heater a local pro will have to do that.
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Tuesday, December 29th, 2015 AT 6:58 AM

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