Exhaust Leaks
If exhaust system has large leaks, exhaust system negative pressure pulses can cause outside air to be drawn into system and past O2 sensor. Vacuum or crankcase leaks can also cause a lean condition.
If Code 44 is intermittent, see INTERMITTENTS in appropriate TESTS W/O CODES article in this section. See below.
- TESTS W/O CODES - GASOLINE (for "C" & "K" Series)
- TESTS W/O CODES - GASOLINE (For "G" & "P" Series)
CODE 44 TERMINAL & CIRCUIT WIRING IDENTIFICATION
| Application | PCM Terminal | Wire Color | ||
|---|---|---|---|---|
| "C" & "K" Series | ||||
| 5.7L A/T | ||||
| Oxygen Sensor Signal | A10 | Purple | ||
| Oxygen Sensor Ground | A12 | Tan | ||
| 5.7L M/T | ||||
| Oxygen Sensor Signal | D7 | Purple | ||
| Oxygen Sensor Ground | D6 | Tan | ||
| "G" Series | ||||
| 5.7L A/T | ||||
| Oxygen Sensor Signal | A10 | Purple | ||
| Oxygen Sensor Ground | A12 | Tan | ||
| "P" Series | ||||
| 5.7L A/T | ||||
| Oxygen Sensor Signal | A10 | Purple | ||
| Oxygen Sensor Ground | A12 | Tan | ||
| 5.7L M/T | ||||
| Oxygen Sensor Signal | D7 | Purple | ||
| Oxygen Sensor Ground | D6 | Tan | ||