← View Generic P0399 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2017 Toyota CAMRY

P0399: P0399: Ignition System Misfire

on 2017 Toyota CAMRY

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
Your Vehicle
2017 Toyota
CAMRY
⚠️

Important for 2017 Toyota CAMRY Owners

Before starting repairs, verify which engine your 2017 Toyota CAMRY has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does P0399 Mean on 2017 Toyota CAMRY?

A misfire detected in one or more cylinders, affecting combustion efficiency, which can cause decreased engine performance, rough idling, and decreased fuel efficiency.
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Symptoms

  • • Rough idling
  • • decreased engine performance
  • • decreased fuel efficiency
  • • engine misfire
  • • decreased power
  • • and decreased acceleration.
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Common Causes

  • • Faulty spark plugs
  • • ignition coil
  • • spark plug wires
  • • fuel injector
  • • or faulty engine compression.
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How to Fix P0399 on 2017 Toyota CAMRY

1. Check and replace spark plugs if necessary. 2. Check and replace ignition coil if necessary. 3. Check and replace spark plug wires if necessary. 4. Check and clean fuel injector if necessary. 5. Check engine compression and replace faulty cylinders if necessary.

🔧

Need Maintenance Info for Your CAMRY?

Get oil capacity, filter specs, and torque settings for your specific 2017 Toyota CAMRY.

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Parts for 2017 Toyota CAMRY

spark plugs Shop ↗ ignition coil Shop ↗ spark plug wires Shop ↗ fuel injector Shop ↗

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OBD2 Scanner

Read & clear codes on your 2017 Toyota CAMRY

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Related Diagnostic Codes

Other codes that may appear with P0399

P0397 Sequential Code

P0397: Ignition System Misfire

Medium
P0398 Sequential Code

P0398: Ignition System Misfire

Medium
P0400 Sequential Code

P0400: Emissions Control System Malfunction

Medium
P0401 Sequential Code

Exhaust Gas Recirculation Flow Insufficient Detected

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