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1999 Toyota 4Runner Limited 3.4L MIL Lamp on
Hey Toyota techs, I got this 1999 4runner that set the converter not efficient code (P4020). I found that the rear O2 sensor is switching and that is why the code was set. The front converter is running hot. I know I will have to replace the converter but the ...
FIX posted 2/14/2003
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Message Closed w/FIX
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13 Replies Received
13 Replies Received
Related Documents & Media | VIN | JT3HN87R0X |
| Engine | 3.4 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P4020 | Converter not efficient |
Message Closed w/FIX
Vehicle Data
1999 Toyota 4Runner Limited
| VIN | JT3HN87R0X |
| Engine | 3.4 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P4020 | Converter not efficient |
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