| 摘要 |
An electronic control apparatus for an internal combustion engine which comprises a control device for exhaust gas return having a control valve for exhaust gas return so that a part of exhaust gas returns from an exhaust gas passage to a suction gas passage, a pressure sensor for detecting pressure in a suction gas pipe, and a failure detecting means for detecting failure of said control device for exhaust gas return based on a value of pressure in said suction gas pipe when said control value for exhaust gas return is in operation, and a second value of pressure in the exhaust gas pipe when the control valve of exhaust gas return is not in operation.
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