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1995 BMW 525i 2.5L MIL Lamp on
This BM came in with Check engine light on, code 1221 set. I checked output from sensor, fixed, voltage to heater, O v. This sensor is so far back I don't think it can get hot enough from the exhaust to work. Checking the heater relay revealed that ECU is not ...
FIX posted 5/25/2001
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Message Closed w/FIX
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Related Documents & Media | VIN | WBAHD6320S |
| Engine | 2.5 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | Not OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Misc. | Sedan |
Trouble Codes
| 1221 | O2 Sensor |
| 1264 | O2 Sensor heater relay I set this one see text |
Message Closed w/FIX
Vehicle Data
1995 BMW 525i
| VIN | WBAHD6320S |
| Engine | 2.5 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | Not OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Misc. | Sedan |
Trouble Codes
| 1221 | O2 Sensor |
| 1264 | O2 Sensor heater relay I set this one see text |
Video