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P2470 OBD2: Exhaust Gas Temperature Sensor Circuit Low

P2470 OBD2: Exhaust Gas Temperature Sensor Circuit Low

What Does the P2470 Code Mean?

The P2470 code indicates that the Powertrain Control Module (PCM) has detected a low voltage or implausible signal from the Exhaust Gas Temperature (EGT) sensor. This sensor plays a critical role in monitoring the temperature of the exhaust gases and ensuring that the emissions control systems are functioning correctly.

What Causes the P2470 Code?

  • Exhaust Gas Temperature (EGT) sensor failure
  • Powertrain Control Module (PCM) failure
  • Wiring issues related to the EGT sensor

What Are the Symptoms of the P2470 Code?

  • Illuminated check engine light
  • Decreased engine performance
  • Increased emissions output
  • Possible reduced fuel economy

How Serious Is the P2470 Code?

The P2470 code is classified as a moderate severity issue. While it may not pose an immediate threat to the vehicle’s safety or drivability, it is important to address the issue in a timely manner to prevent further complications and ensure optimal engine performance.

How to Diagnose the P2470 Code

  1. Use an OBD-II scanner to confirm the presence of the P2470 code and check for any other related codes.
  2. Inspect the wiring and connector of the EGT sensor for damage, corrosion, or loose connections.
  3. Test the EGT sensor with a multimeter to ensure it is functioning within specifications.
  4. Check the PCM for any signs of malfunction that may be triggering the code.

Common Repairs for the P2470 Code

  • Replacing the faulty EGT sensor
  • Repairing or replacing damaged wiring or connectors
  • Reprogramming or replacing the PCM, if necessary

How Much Does It Cost to Fix the P2470 Code?

The cost to repair the P2470 code can vary widely based on the cause of the issue. On average, you can expect to pay between $100 and $500, depending on whether it involves sensor replacement, wiring repairs, or PCM reprogramming.

Can I Fix the P2470 Code Myself?

If you have experience with automotive repairs and the proper tools, you may be able to diagnose and fix the P2470 code yourself. However, if you are not confident in your abilities, it is advisable to consult a professional mechanic to ensure the issue is correctly diagnosed and repaired.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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