← View Generic P1122 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P1122: P1122: Fuel Pressure Regulator Control Circuit Low Input

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
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 P1122 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The fuel pressure regulator control circuit low input is a manufacturer-specific code that indicates a problem with the fuel pressure regulator's control circuit. This code is specific to Ford vehicles. It may indicate a faulty fuel pressure regulator, a wiring issue, or a problem with the engine control module.
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Symptoms

  • • Rough engine idle
  • • decreased fuel efficiency
  • • poor engine performance
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Common Causes

  • • Faulty fuel pressure regulator
  • • wiring issue
  • • engine control module problem
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How to Fix P1122 on 2020 Chevrolet SILVERADO 1500 PICKUP

Check the fuel pressure regulator for proper operation and replace if necessary. Check the wiring harness for damage or corrosion and repair if necessary. Update the engine control module software if necessary.

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Fuel Pressure Regulator Shop ↗ Wiring Harness Shop ↗

Essential Tool

Must Have

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Related Diagnostic Codes

Other codes that may appear with P1122

P1120 Sequential Code

P1120: Fuel Pressure Regulator Control Circuit Low Input

Medium
P1121 Sequential Code

P1121: Fuel Pressure Regulator Control Circuit Low Input

Medium
P1123 Sequential Code

P1123: Fuel Pressure Regulator Control Circuit Low Input

Medium
P1124 Sequential Code

P1124: Fuel Pressure Regulator Control Circuit Low Input

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