| Reactive O2 sensors are like batteries | |
| A new o2 sensor produces about | 10 to 11 millivolts
across the 2 pins |
| A usable o2 sensor produces about | 7 to 8 millivolts |
| A dead o2 sensor produces | 5 or less millivolts |
| Resistance value readings | |
| new o2 sensor | +- 274 ohms -+ 197 ohms |
| bad sensor | +- 230 ohms -+ 226 ohms |
| no biscuit (for bad reference) | +- 233 ohms -+ 233 ohms |