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2003 Toyota Corolla LE 1.8L MIL Lamp on
We replaced cat convertor and rear O2 sensor for a code PO420 code returns within 2 days,we sent to dealer for reprogram but were told we need to replace the pcm for this car to fix.I can not understand how after 137000 plus miles without a code po420 that pcm...
FIX posted 12/11/2009
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Message Closed w/FIX
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13 Replies Received
13 Replies Received
Related Documents & Media | VIN | 2T1BR32E93 |
| Engine | 1.8 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
2003 Toyota Corolla LE
| VIN | 2T1BR32E93 |
| Engine | 1.8 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Video