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1998 Mazda Protege ES 1.8L MIL Lamp on
upstream sensor responds normal on mastertech, downstream sensor always reads o volts. the heater voltage is 12v at sensor. heater ground is good, signal ground is good still no signal from sensor at scanner or at the sensor itself. i believe it is a bad conve...
Summary posted 4/29/2002
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Related Documents & Media | VIN | JM1BC1427W |
| Engine | 1.8 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/Summary
Vehicle Data
1998 Mazda Protege ES
| VIN | JM1BC1427W |
| Engine | 1.8 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Video