LR3 o2 Sensor Readiness Drive Cycle
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LR3 o2 Sensor Readiness Drive Cycle
Anyone have a drive cycle instruction to reset o2s readiness for emissions?
Acquired ‘05 LR3 / Discovery 3 with a CEL for P0172 and P0175, rich fuel. Replaced the non-OE MAF with OE, and oil-style air filter with OE paper one, immediate increase in MPG, and CEL disappeared, but now o2 sensor shows not ready for emissions testing. Currently no DTCs and driven over 1000mi in the past couple of weeks.
Would the prior codes indicate the o2 sensors were working properly before, and just need a drive cycle to reset? Not opposed to swapping the sensors but wanted to try and reset them first. Thanks all!
Acquired ‘05 LR3 / Discovery 3 with a CEL for P0172 and P0175, rich fuel. Replaced the non-OE MAF with OE, and oil-style air filter with OE paper one, immediate increase in MPG, and CEL disappeared, but now o2 sensor shows not ready for emissions testing. Currently no DTCs and driven over 1000mi in the past couple of weeks.
Would the prior codes indicate the o2 sensors were working properly before, and just need a drive cycle to reset? Not opposed to swapping the sensors but wanted to try and reset them first. Thanks all!
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