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1999 Toyota 4Runner SR5 3.4L MIL Lamp on
Keeps setting P0420, replaced air/fuel ratio sensor and it outputs a voltage of 3.2 volts @ idle all the way to the computer. The scanners (Modus) and (Mastertech) show 660mv for bank 1 sensor 1 (the air/fuel ratio sensor) and a varying 100mv to 900mv for the ...
Summary posted 11/23/2007
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Related Documents & Media | VIN | JT3HN86R5X |
| Engine | 3.4 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
| Misc. | California Emissions |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/Summary
Vehicle Data
1999 Toyota 4Runner SR5
| VIN | JT3HN86R5X |
| Engine | 3.4 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
| Misc. | California Emissions |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Video