Engine-Codes.com
Engine-Codes – Generic – P044B

P044B Code - Exhaust Gas Recirculation Sensor 'C' Circuit Range/Performance

Quick Answer

The P044B diagnostic trouble code (DTC) indicates a problem with the Exhaust Gas Recirculation (EGR) sensor 'C' circuit's range or performance. Common causes include Faulty EGR sensor 'C', Damaged wiring or connectors in the sensor circuit, EGR valve malfunction. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P044B indicates Exhaust Gas Recirculation Sensor 'C' Circuit Range/Performance.
Common causes
Common causes include Faulty EGR sensor 'C', Damaged wiring or connectors in the sensor circuit, EGR valve malfunction.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P044B Description

The P044B diagnostic trouble code (DTC) indicates a problem with the Exhaust Gas Recirculation (EGR) sensor 'C' circuit's range or performance. The EGR system is responsible for recirculating a portion of the engine's exhaust gases back into the intake manifold to reduce nitrogen oxide emissions. The EGR sensor 'C' is a crucial component that monitors the EGR system's operation and ensures that the correct amount of exhaust gas is being recirculated.

OBDII Code P044B - Exhaust Gas Recirculation Sensor 'C' Circuit Range/Performance
P044B Code - Exhaust Gas Recirculation Sensor 'C' Circuit Range/Performance

Common Causes of P044B

  1. Faulty EGR sensor 'C'
  2. Damaged wiring or connectors in the sensor circuit
  3. EGR valve malfunction
  4. Carbon buildup in the EGR system
  5. PCM (Powertrain Control Module) software issue

Symptoms of P044B

  1. Rough idling
  2. Reduced fuel efficiency
  3. Hesitation or stalling during acceleration
  4. Increased emissions
  5. Check Engine Light illuminated

How to Fix P044B

  1. Use a scan tool to diagnose the specific cause of the P044B code.
  2. Inspect the EGR sensor 'C' and its wiring for any damage or corrosion.
  3. Test the EGR valve for proper operation and clean or replace if necessary.
  4. Clear the DTC and reset the PCM to see if the code returns after repairs.
  5. Perform a road test to ensure that the issue has been resolved and the vehicle is operating correctly.

Cost to Fix P044B

The typical repair costs for addressing a P044B code can vary depending on the specific cause of the issue. In general, replacing a faulty EGR sensor 'C' or repairing damaged wiring may cost between $150 and $300, including parts and labor. If the EGR valve needs to be replaced, the cost can range from $200 to $500. Additional diagnostic time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate.

Need more information about the P044B code?

Need more information on how to fix the P044B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P044B code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P044B Code

No Frequently Asked Questions about P044B Code found.

Discuss the causes and fixes for P044B OBDII Code

Submit a New Comment

Code P044B comments

No comments found for this page.