P245D Fault Code

Exhaust Gas Recirculation Cooler Bypass Control Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P245D code indicates that there is an issue with the Exhaust Gas Recirculation (EGR) cooler bypass control circuit, specifically that it is reading a high voltage. This often means that the EGR system may not be functioning properly, leading to increased emissions and potential engine performance issues.

• The EGR system is crucial for reducing nitrogen oxide (NOx) emissions by recirculating a portion of the exhaust gas back into the engine's intake.
• A malfunction in the bypass control circuit can cause the EGR cooler not to operate correctly, affecting overall engine efficiency.

What are the symptoms of the P245D code?

Drivers may experience a range of symptoms that could indicate a problem with the EGR system:

• Illuminated Check Engine Light (CEL)
• Decreased engine power or performance
• Rough idling or stalling
• Increased exhaust emissions
• Poor fuel economy.

What causes the P245D code?

Common causes for the P245D code include:

• Faulty EGR cooler bypass valve or control solenoid
• Damaged wiring or connectors in the EGR system
• Short circuit or open circuit in the bypass control circuit
• Issues with the Engine Control Module (ECM) that controls the EGR system
• Accumulation of carbon deposits affecting the EGR system.

How to fix P245D?

To address the P245D fault code, the following steps can be taken:

1. Inspect the wiring and connectors in the EGR system for damage or corroded connections.
2. Test the EGR cooler bypass valve and solenoid for proper operation.
3. Clean or replace any clogged components to ensure proper airflow.
4. If the control circuit is found to be faulty, repair or replace the damaged wiring.
5. Clear the fault codes and conduct a test drive to confirm the issue is resolved.