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1997 Mazda 626 DX 2.0L MIL Lamp on
This is my sisters car. She said the mil lamp started going on and off after the battery was replaced. I checked the codes and came up with P0421. I don't think there is any connection to the battery being replaced. The pre and post O2 sensors are switching @ ...
Summary posted 2/9/2001
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Related Documents & Media | VIN | 1YVGE22C5V |
| Engine | 2.0 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / MPI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0421 | Catalytic Converter Efficiency (Bank 1) |
Message Closed w/Summary
Vehicle Data
1997 Mazda 626 DX
| VIN | 1YVGE22C5V |
| Engine | 2.0 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / MPI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0421 | Catalytic Converter Efficiency (Bank 1) |
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