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P1127 Codes
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Posted by Dean (more from Dean) on Thu, 17 Jul 2003 11:30:05 Share Post by Email
In Reply to: P1127 Code, Steve, Thu, 17 Jul 2003 08:14:17
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Here are some codes, not SAAB.

I would check to see if the O2 sensor base is a good ground. It grounds via the exhaust system. Use a Digit Multi Meter (DMM) and measure the resistance. Check fuses for O2 sensor heaters. Check wires and connectors for sensors. If a bad sensor base ground, find where the resistance is and fix that. I think a newground wire to the senor base held with a SS gear clamp could work as well.

P1127 Heated Oxygen Sensor Heater not on During KOER Test.
P1127 Heated Oxygen Sensor Heater not on During KOER Test.
P1127 - Exhaust Not Warm The HEGO monitor uses an •Engine not operating long enough prior to
Enough, Downstream Sensor Not exhaust temperature model to performing KOER self-test
Tested determine when the HO2S heaters
•Exhaust temperature not warm enough can safely be turned on. The code
is set when the inferred exhaust •Pre-existing P0135, P0141, P0155, P0161
temperature is below a minimum
calibrated value.
P1127 Long Term Fuel Trim - System too Rich (Bank 1) A
The DTC associated with the downstream HO2S not running in on-demand is DTC P1127.
For Opel (GM) P1127 Exhaust not warm enough, downstream Heated Oxygen Sensors (HO2Ss) not tested

VW: P1127
Long Term Fuel Trim mult.,Bank1 System too Rich



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