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DTC - Diagnostic Trouble Codes information

P0657

Powertrain Codes

P0657 - HONDA - Air/Fuel Ratio Sensor Relay Circuit Malfunction

Symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

- Air/Fuel ratio sensor relay circuit open or shorted - Poor air/fuel ratio sensor realy electrical connection - Failed Air/Fuel sensor relay