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Engine-Codes – Generic – P245C

P245C Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit Low

Quick Answer

The P245C diagnostic trouble code (DTC) refers to the Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit being detected as operating at a low voltage. Common causes include Faulty EGR Cooler Bypass Control Solenoid: The solenoid responsible for controlling the EGR cooler bypass may be malfunctioning, leading to low voltage operation, Wiring Issues: Damaged or corroded wiring in the EGR cooler bypass control circuit can disrupt the flow of electricity and trigger the P245C code, EGR Cooler Bypass Control Circuit Short: A short circuit in the circuit can cause the voltage to drop below the specified range, triggering the code. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P245C indicates Exhaust Gas Recirculation Cooler Bypass Control Circuit Low.
Common causes
Common causes include Faulty EGR Cooler Bypass Control Solenoid: The solenoid responsible for controlling the EGR cooler bypass may be malfunctioning, leading to low voltage operation, Wiring Issues: Damaged or corroded wiring in the EGR cooler bypass control circuit can disrupt the flow of electricity and trigger the P245C code, EGR Cooler Bypass Control Circuit Short: A short circuit in the circuit can cause the voltage to drop below the specified range, triggering the code.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P245C Description

The P245C diagnostic trouble code (DTC) refers to the Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit being detected as operating at a low voltage. The EGR system plays a crucial role in reducing harmful emissions by recirculating a portion of exhaust gases back into the engine's combustion chambers. The EGR cooler helps lower the temperature of these gases before they are reintroduced to prevent engine knocking and reduce nitrogen oxide emissions.

OBDII Code P245C - Exhaust Gas Recirculation Cooler Bypass Control Circuit Low
P245C Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit Low

Common Causes of P245C

  1. Faulty EGR Cooler Bypass Control Solenoid: The solenoid responsible for controlling the EGR cooler bypass may be malfunctioning, leading to low voltage operation.
  2. Wiring Issues: Damaged or corroded wiring in the EGR cooler bypass control circuit can disrupt the flow of electricity and trigger the P245C code.
  3. EGR Cooler Bypass Control Circuit Short: A short circuit in the circuit can cause the voltage to drop below the specified range, triggering the code.
  4. ECU Malfunction: A faulty Engine Control Unit (ECU) may incorrectly interpret signals from the EGR cooler bypass control circuit, leading to the low voltage condition.

Symptoms of P245C

  1. Check Engine Light: The most common symptom associated with the P245C code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Engine Performance: The engine may experience reduced power output, hesitation, or rough idling due to improper EGR cooler bypass control.
  3. Increased Emissions: A malfunctioning EGR system can lead to higher emissions output, potentially causing the vehicle to fail emissions tests.
  4. Poor Fuel Economy: Inefficient EGR cooler bypass control can also result in decreased fuel efficiency, leading to more frequent visits to the gas station.

How to Fix P245C

  1. Diagnose the Issue: Use an OBD-II scanner to retrieve the trouble code and perform a visual inspection of the EGR cooler bypass control circuit for any visible damage.
  2. Test EGR Cooler Bypass Control Solenoid: Check the resistance of the solenoid to determine if it is functioning within specifications. Replace if necessary.
  3. Inspect Wiring: Thoroughly inspect the wiring harness for any signs of damage, corrosion, or loose connections. Repair or replace damaged wiring as needed.
  4. Clear Codes: Clear the DTC from the vehicle's memory using the OBD-II scanner after completing the repair to reset the check engine light.
  5. Test Drive: Take the vehicle for a test drive to ensure that the issue has been resolved and that the check engine light does not reappear.

Cost to Fix P245C

The cost of repairing the P245C code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair for this code may range from $150 to $500, including parts and labor. Keep in mind that additional diagnostic time may be needed to pinpoint the exact cause of the problem, which can affect the overall cost. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your vehicle's make and model.

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Code P245C Information for Specific Makes

  • P245C Dodge — Exhaust Gas Recirculation Cooler Bypass Control Circuit Low
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.

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