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2001 Honda Civic EX 1.7L MIL Lamp on
Hello fellow technicians. This is probably a simple one, but the vehicle keeps getting code P0420(catalyst effeciency below threshold bank 1). Driver says vehicle runs fine and the only mod he has done is a cool air intake. 02 sensor gone bad? Anyone else seen...
FIX posted 7/31/2003
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Message Closed w/FIX
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11 Replies Received
11 Replies Received
Related Documents & Media | VIN | 1HGEM21931 |
| Engine | 1.7 L / 4 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
2001 Honda Civic EX
| VIN | 1HGEM21931 |
| Engine | 1.7 L / 4 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Video