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Home >> Toyota >> 1994 >> Tercel Sedan 2-Door L4-1456cc 1.5L SOHC (3E) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> Engine Control System >> DTC 21

DTC 21



DTC 21 Main Heated Oxygen Sensor Circuit

Diagnostic Procedure






Malfunction and/or Repair Verification

To verify a malfunction or repair, Code 21

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