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P2569 OBD2: Direct Ozone Reduction Catalyst Temperature Sensor Circuit Low

P2569 OBD2: Direct Ozone Reduction Catalyst Temperature Sensor Circuit Low

The P2569 code is an OBD-II trouble code that indicates a problem with the Direct Ozone Reduction Catalyst Temperature Sensor Circuit. This code typically occurs in vehicles equipped with Super Low Emissions Vehicles (SULEV) technology.

What Does the P2569 Code Mean?

When the OBD-II system detects an issue with the Direct Ozone Reduction Catalyst Temperature Sensor Circuit, it triggers the P2569 code. This means that the temperature sensor associated with the catalytic converter is reporting a value that is lower than expected, indicating a potential malfunction.

What Causes the P2569 Code?

Several factors can lead to the P2569 code being set, including:

  • Failure of the Environmental Air Catalyst (EAC) sensor, which is integrated into the radiator assembly.
  • Improper coding of the EAC sensor to the powertrain control module (PCM).
  • The radiator not meeting the manufacturer’s specifications or requirements.
  • Installation of an aftermarket radiator that is incompatible with the vehicle’s systems.

What Are the Symptoms of the P2569 Code?

Symptoms of the P2569 code may include:

  • Check Engine Light illuminated on the dashboard.
  • Reduced engine performance or efficiency.
  • Increased emissions due to improper catalytic converter function.
  • Potential overheating issues if the radiator is not functioning correctly.

How Serious Is the P2569 Code?

The P2569 code is considered urgent and should be addressed promptly. Ignoring it may lead to significant damage to the vehicle’s emission control system, which can result in costly repairs and may affect your vehicle’s compliance with emissions regulations.

How to Diagnose the P2569 Code

Diagnosing the P2569 code involves several steps:

  1. Use an OBD-II scanner to confirm the P2569 code and check for any additional trouble codes.
  2. Inspect the EAC sensor and wiring for any visible damage or corrosion.
  3. Check the radiator for compliance with manufacturer specifications.
  4. Verify proper coding of the EAC sensor to the PCM, ensuring it matches the vehicle’s configuration.

Common Repairs for the P2569 Code

Common repairs for the P2569 code may include:

  • Replacing the failed EAC sensor with a genuine OEM part.
  • Reprogramming or coding the EAC sensor to the PCM.
  • Installing a compliant radiator that meets the manufacturer’s requirements.
  • Repairing any damaged wiring or electrical connections associated with the EAC sensor.

How Much Does It Cost to Fix the P2569 Code?

The cost to fix the P2569 code can vary widely depending on the specific repair needed. Generally, you can expect to pay between $150 and $1,500, depending on whether sensor replacement, PCM reprogramming, or radiator replacement is required.

Can I Fix the P2569 Code Myself?

If you have automotive repair experience and the right tools, you may be able to address the P2569 code yourself, particularly if it involves replacing the EAC sensor or checking the wiring. However, due to the complexity of the emissions system and the need for proper coding, seeking professional assistance is often recommended to ensure all issues are accurately 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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