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2001 Mazda Protege ES 2.0L MIL Lamp on
Hello to all, this mazda intermittantly sets this po421
code. I replaced both o2s with mazda parts as the upstream
was slow to switch and have over 100k on them. cleared
codes road tested with passing results per [...] steps.
FIX posted 9/19/2008
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Message Closed w/FIX
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Related Documents & Media | VIN | JM1BJ22551 |
| Engine | 2.0 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0421 | Catalytic Converter Efficiency (Bank 1) |
Message Closed w/FIX
Vehicle Data
2001 Mazda Protege ES
| VIN | JM1BJ22551 |
| Engine | 2.0 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0421 | Catalytic Converter Efficiency (Bank 1) |
Video