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Home >> Oldsmobile >> 1997 >> Regency >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Systems Tests W/Codes >> Diagnostic Trouble Codes >> DTC P1134 - Ho2S Transition Time Ratio Sensor 1 >> Diagnostic Aids

July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Aids

Check HO2S 1 heater operation. If HO2S 1 heater operation is okay, replace HO2S 1.

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