Intake Air Temperature Sensor Circuit Low Input
The POWERSTROKE-P0112-73 (Power Stroke) diesel fault code means: Intake Air Temperature Sensor Circuit Low Input. This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- beginner
- Estimated cost
- $20-$60
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Common Symptoms
- Slight smoke on cold start
- CEL
- Minor MPG loss
Probable Causes (Ranked by Likelihood)
- Failed IAT sensor Very Likely
- Short in IAT signal wire Likely
Frequently Asked Questions
What is P0112 on a 7.3L Power Stroke?
P0112 on a 7.3L Power Stroke (1994-2003) indicates: Intake Air Temperature Sensor Circuit Low Input. This is a known diagnostic trouble code on this engine family and typically points to the causes listed above.
Can I drive with P0112 on my Power Stroke?
Yes, you can generally drive with this code, but diagnose it soon to prevent further damage.
How much does it cost to fix P0112?
Repair cost is typically $20-$60 depending on the underlying cause and whether you DIY or use a shop. Diagnostic time alone runs $100-$180 at most independent diesel shops.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
Monitor IAT PID -- should match ambient at cold start.
Replace sensor ($15-$30); very cheap fix.
Commonly Affected Vehicles
- 1994.5-1997 Ford F-250/F-350 7.3L Power Stroke
- 1999-2003 Ford F-250/F-350 Super Duty 7.3L Power Stroke
- 1999-2003 Ford F-450/F-550 Super Duty 7.3L Power Stroke
- 1994.5-2003 Ford E-350/E-450 7.3L Power Stroke
- 2000-2003 Ford Excursion 7.3L Power Stroke
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