Pinpoint Tests RC: Exhaust Gas Temperature (EGT) Sensor: Introduction
WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
WHILE CONDUCTING TESTS ON A HOT ENGINE TAKE ALL SAFETY PRECAUTIONS TO PREVENT SKIN CONTACT WITH HOT ENGINE COMPONENTS. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
NOTE:
Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.
This pinpoint test is intended to diagnose the following:
- EGT sensor (12B591)
- harness circuits: EGT11, EGT12, EGT13, EGT14, and SIGRTN
- powertrain control module (PCM) (12A650)
EGT SENSOR TEMPERATURE AND RESISTANCE SPECIFICATIONS
| Temperature | Temperature Sensor Value | |
|---|---|---|
| °C | °F | Resistance (ohms) |
| 850 | 1, 562 | 766.31 |
| 800 | 1, 472 | 737.68 |
| 750 | 1, 382 | 708.46 |
| 700 | 1, 292 | 678.66 |
| 650 | 1, 202 | 648.27 |
| 600 | 1, 112 | 617.30 |
| 550 | 1, 022 | 585.74 |
| 500 | 932 | 553.60 |
| 450 | 842 | 520.87 |
| 400 | 752 | 487.56 |
| 350 | 662 | 453.66 |
| 300 | 572 | 419.18 |
| 250 | 482 | 384.11 |
| 200 | 392 | 348.46 |
| 150 | 302 | 312.22 |
| 100 | 212 | 275.40 |
| 50 | 122 | 237.99 |
| 0 | 32 | 200.00 |
| -40 | -40 | 169.18 |