← View Generic P0221 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0221: Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance Problem

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$80 - $400
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
Your Vehicle
2020 Chevrolet
SILVERADO 1500 PICKUP
⚠️

Important for 2020 Chevrolet SILVERADO 1500 PICKUP Owners

Before starting repairs, verify which engine your 2020 Chevrolet SILVERADO 1500 PICKUP has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does P0221 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The secondary throttle position sensor signal does not correlate properly with other engine parameters.
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Symptoms

  • • Inconsistent acceleration
  • • poor performance
  • • limp mode
  • • erratic idle
  • • reduced power output.
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Common Causes

  • • Faulty throttle position sensor B
  • • sensor misalignment
  • • carbon buildup on throttle body
  • • wiring resistance.
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How to Fix P0221 on 2020 Chevrolet SILVERADO 1500 PICKUP

Replace throttle position sensor B, clean throttle body, repair wiring, check sensor alignment and calibration.

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Need Maintenance Info for Your SILVERADO 1500 PICKUP?

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Fuel Injector Shop ↗ Injector O-Rings Shop ↗ Wiring Harness Shop ↗

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with P0221

P0219 Sequential Code

P0219: Fuel Injector Circuit Malfunction

Medium
P0220 Sequential Code

Throttle/Pedal Position Sensor/Switch B Circuit Malfunction

Medium
P0222 Sequential Code

P0222: Fuel Injector Circuit Malfunction

Medium
P0223 Sequential Code

P0223: Fuel Injector Circuit Malfunction

Medium

💡 Why These Codes Are Related:

  • • Similar Issues: Same root cause or component failure
  • • Related Problems: Often occur together due to system interactions
  • • Sequential Codes: Progressive failure stages or multiple sensors
  • • Same System: Components within the same automotive system