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Home >> Hyundai >> 2009 >> Elantra Touring Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures >> Inspection Chart For Diagnostic Trouble Codes (DTC) >> P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) >> DTC Description
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DTC Description

  1. Signal amplitude plausibility error : In order to determine the signal amplitude plausibility, the PCM monitors front HO2S signal level from rich to lean and from lean to rich. The PCM sets DTC P0134, If the difference of the signal transition level is too small.
  2. Signal plausibility error during fuel cutoff: PCM sets DTC P0134, if the HO2S (B1S1) signal is too high during fuel cutoff period for a predetermined time.
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