Throttle/Pedal Position Sensor/Switch "B" Circuit Range/Performance
The POWERSTROKE-P0221 (Power Stroke) diesel fault code means: Throttle/Pedal Position Sensor/Switch "B" Circuit Range/Performance. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- intermediate
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What Are the Symptoms of POWERSTROKE-P0221?
- Check Engine Light on
- Possible reduced power or rough running
- Possible hard starting
What Causes POWERSTROKE-P0221? (Most Likely First)
- Sensor reading incorrectly High
- Wiring or connector fault Moderate
- A real fault in the system the sensor measures Moderate
- Shared sensor reference voltage problem Low
Can I Still Drive with POWERSTROKE-P0221?
Short distances only. POWERSTROKE-P0221 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P0221 mean on a Power Stroke?
P0221 means Throttle/Pedal Position Sensor/Switch "B" Circuit Range/Performance. The pedal position sensor "B" is reporting, but its reading does not make sense against what the engine computer expects from other inputs.
Is P0221 a Power Stroke-specific code?
No. P0221 is a generic OBD-II code defined by SAE J2012, so it means the same thing on any vehicle that sets it. The exact conditions Ford uses to set it on its diesels are in Ford service information.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose POWERSTROKE-P0221?
Inspect the pedal position sensor "B" connector and harness.
Compare the pedal position sensor "B" reading with the other sensors and with operating conditions on a scan tool.
Check for other codes that share the same sensor reference voltage or ground.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines P0221 as a generic OBD-II code)
P0221 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:
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