Throttle/Pedal Position Sensor B Circuit Range/Performance
The POWERSTROKE-P0221 (Power Stroke) diesel fault code means: Throttle/Pedal Position Sensor B Circuit Range/Performance. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- intermediate
- Estimated cost
- $150-$400
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Common Symptoms
- Limp mode
- Reduced throttle response
- CEL
Probable Causes (Ranked by Likelihood)
- Failed APP (accelerator pedal position) sensor Very Likely
- Damaged APP wiring or connector Likely
Step-by-Step Diagnostic Procedure
Monitor APP1 and APP2 PIDs with scan tool sweeping pedal.
Both signals should track proportionally; divergence = failed APP assembly.
Inspect pedal connector for corrosion.
Frequently Asked Questions
What is P0221 on a 7.3L Power Stroke?
P0221 on a 7.3L Power Stroke (1994-2003) indicates: Throttle/Pedal Position Sensor B Circuit Range/Performance. This is a known diagnostic trouble code on this engine family and typically points to the causes listed above.
Can I drive with P0221 on my Power Stroke?
Only drive short distances to get to a repair facility. Continued operation may cause further damage.
How much does it cost to fix P0221?
Repair cost is typically $150-$400 depending on the underlying cause and whether you DIY or use a shop. Diagnostic time alone runs $100-$180 at most independent diesel shops.
P0221 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown: