Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Controls - Sensor Operating Range Charts: Introduction
Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it may cause driveability problems.
| Temperature | Ohms |
|---|---|
| 77°F (25°C) | 29,000-36,300 |
| 185°F (85°C) | 3300-3700 |
| Terminal Wire Color | Ignition On: Volts | Engine Running: Volts | |
|---|---|---|---|
| Red/Black (Power Supply) | 12.0 | 12.0 | |
| Black/Blue (Airflow Mass) | |||
| M/T | 1.0-1.5 | 1.5-5.0 | |
| A/T | 0 | 0.6-0.7 | |
| Black/Green (Ground) | 0 | 0 | |
| Terminals (1) | Temperature | Ohms | |||||||
|---|---|---|---|---|---|---|---|---|---|
| E2 & Vs | |||||||||
| Closed | 68°F (20°C) | 20-600 | |||||||
| Open | 68°F (20°C) | 20-1000 | |||||||
| E2 & Vc (2) | 68°F (20°C) | 200-400 | |||||||
| E2 & THA (3) | -4°F (-20°C) | 10,000-20,000 | |||||||
| 68°F (20°C) | 2000-3000 | ||||||||
| 140°F (60°C) | 400-700 | ||||||||
|
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| Temperature | Ohms |
|---|---|
| -4°F (-20°C) | 14,600-17,800 |
| 68°F (20°C) | 2200-2700 |
| 104°F (40°C) | 1000-1300 |
| 140°F (60°C) | 500-650 |
| 176°F (80°C) | 290-350 |
| Terminals | Ohms |
|---|---|
| "A" & "B" | 5000 |
| "A" & "C" | 700-5000 |
| "B" & "C" | 700-5000 |
| Operating Condition | Voltage |
|---|---|
| Rapidly Accelerating | 0.5-1.0 |
| Deceleration | 0.0-0.4 |
| Test Condition (1) | (2) Continuity | ||||
|---|---|---|---|---|---|
| .006" (.15 mm) | Yes | ||||
| .020" (.50 mm) | No | ||||
|
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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