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Home >> Toyota >> 1990 >> Pickup Base, 22R >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4-CYL CARBURETED >> Code 21 - O2 Sensor Signal (22R)

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Code 21 - O2 Sensor Signal (22R)

O2 Sensor or Sensor Circuit
ECU

NOTE: Diagnostic chart not available from manufacturer.

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