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THE TRAINER #129: P0420/P0430 - PERFORMING A COMPLETE DIAGNOSIS
| 题名： | THE TRAINER #129: P0420/P0430 - PERFORMING A COMPLETE DIAGNOSIS |
| 正文语种： | eng |
| 作者： | PETE MEIER |
| 摘要： | The P0420/P0430 trouble codes are the #1 DTCs in the U.S. And the most common repair made is the replacement of the catalytic converter. But all too often, this doesn't keep the Check Engine light off. When tackling these DTCs, the first step is understanding how converters fail. A common cause of converter failure is overheating, leading to damage to the converter substrate. Another common cause is the poisoning of the converter. This occurs when the substrate becomes covered with a foreign substance - usually oil or coolant. If the substrate is coated, active conversion can't take place. Physical damage is also a cause of converter failure. Damage to the converter housing, cracks in the exhaust system allowing air into the converter, and broken welds are all examples of physical damage. |
| 出版年： | 2022 |
| 期刊名称： | Motor age |
| 卷： | 141 |
| 期： | 8 |
| 页码： | 64-64 |
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