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2003 Mazda MPV EX 3.0L History Codes
Van failed emissions - current DTC P0421 & P0431. Read O2 sensor voltages with vehicle warm and voltages on all 4 sensors are all over the place - .03 to .930 and jumping all over the place. I picked the easy fruit on this one - connections, grounds, sensor ti...
Summary posted 5/20/2011
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| VIN | JM3LW28J93 |
| Engine | 3.0 L / 6 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | History Codes |
| Occurs | Always |
Trouble Codes
| P0421 | Catalytic Converter Efficiency (Bank 1) |
| P0431 | Catalyst Efficiency Below Normal (Bank 2) |
Message Closed w/Summary
Vehicle Data
2003 Mazda MPV EX
| VIN | JM3LW28J93 |
| Engine | 3.0 L / 6 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | History Codes |
| Occurs | Always |
Trouble Codes
| P0421 | Catalytic Converter Efficiency (Bank 1) |
| P0431 | Catalyst Efficiency Below Normal (Bank 2) |
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