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2001 Volkswagen Jetta GL 2.0L Excessive Emissions, MIL Lamp on
we have had this vehicle in twice now for this problem. the first time sensor 1 was not switching. we replaced the front o2 sensor and all fuel trim values returned to normal and the o2 was switching properly. now the vehicle has returned with a p1128 as a cur...
FIX posted 4/5/2005
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Message Closed w/FIX
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9 Replies Received
Related Documents & Media | VIN | 3VWR529M61 |
| Engine | 2.0 L / 4 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions, MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0134 | Air Fuel Sensor (Bank 1 Sensor 1) Heater System Malfunction |
| P0137 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Low Voltage |
| P0139 | Heated Oxygen Sensor (Bank 1 Sensor 2) Slow Response |
| P0172 | Fuel System Too Rich (Bank 1) |
| P1128 | MAP Sensor Signal Lower Than Expected |
Message Closed w/FIX
Vehicle Data
2001 Volkswagen Jetta GL
| VIN | 3VWR529M61 |
| Engine | 2.0 L / 4 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions, MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0134 | Air Fuel Sensor (Bank 1 Sensor 1) Heater System Malfunction |
| P0137 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Low Voltage |
| P0139 | Heated Oxygen Sensor (Bank 1 Sensor 2) Slow Response |
| P0172 | Fuel System Too Rich (Bank 1) |
| P1128 | MAP Sensor Signal Lower Than Expected |
Video