AutoCodes – Generic – P245A

P245A Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit

Quick Answer

The Engine Control Module (ECM) uses the Exhaust Gas Recirculation (EGR) bypass valve position sensor to determine the position of the bypass valve. Common causes include Faulty Exhaust Gas Recirculation (EGR) Cooler Bypass Valve, Exhaust Gas Recirculation Cooler Bypass Valve harness is open or shorted, Exhaust Gas Recirculation Cooler Bypass Valve circuit poor electrical connection. 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: P245A indicates Exhaust Gas Recirculation Cooler Bypass Control Circuit.
Common causes: Common causes include Faulty Exhaust Gas Recirculation (EGR) Cooler Bypass Valve, Exhaust Gas Recirculation Cooler Bypass Valve harness is open or shorted, Exhaust Gas Recirculation Cooler Bypass Valve circuit poor electrical connection.
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.

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Code Popularity 34,137

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 30, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P245A Description

The Engine Control Module (ECM) uses the Exhaust Gas Recirculation (EGR) bypass valve position sensor to determine the position of the bypass valve. The ECM sends a reference voltage through the 5-volt reference circuit to the position sensor. The ECM provides a voltage return path for the sensor through the low reference circuit. A variable voltage signal, based on the valve position, is sent from the sensor to the ECM through the position sensor signal circuit. The ECM compares the actual bypass valve position with the desired bypass valve position when the valve is commanded open or closed. The EGR cooler bypass valve is controlled by the ECM through the bypass valve motor high control and the low control circuits. The ECM will pulse width modulate the low control circuit to ground when EGR cooler bypass is desired.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects an open circuit condition of the EGR cooler bypass valve control circuit for greater than 3 s.

OBDII Code P245A - Exhaust Gas Recirculation Cooler Bypass Control Circuit - AutoCodes.com — P245A Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit

What does this mean?

What are the Possible Causes of the DTC P245A?

Faulty Exhaust Gas Recirculation (EGR) Cooler Bypass Valve
Exhaust Gas Recirculation Cooler Bypass Valve harness is open or shorted
Exhaust Gas Recirculation Cooler Bypass Valve circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P245A?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P245A code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P245A code?

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Need Help with the Code?

Get the P245A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P245A Buick — Exhaust Gas Recirculation Cooler Bypass Control Circuit
P245A Cadillac — Exhaust Gas Recirculation Cooler Bypass Control Circuit
P245A Chevrolet — Exhaust Gas Recirculation Cooler Bypass Control Circuit
P245A Dodge — Exhaust Gas Recirculation Cooler Bypass Control Circuit/Open
P245A GMC — Exhaust Gas Recirculation Cooler Bypass Control Circuit

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 P245A Code

1. What are common symptoms of OBDII code P245A (Exhaust Gas Recirculation Cooler Bypass Control Circuit)?

Symptoms may include reduced engine performance, rough idling, decreased fuel efficiency, and the illumination of the check engine light.

2. What are possible causes of OBDII code P245A?

Potential causes of this code could include a faulty EGR cooler bypass control valve, damaged wiring or connectors in the circuit, or issues with the EGR system itself.

3. How can I diagnose OBDII code P245A?

Diagnosing this code typically involves using a scan tool to retrieve the code, inspecting the EGR cooler bypass control circuit for any visible damage, and testing the components within the circuit for proper functionality.

4. Can I continue driving with OBDII code P245A present?

It is not recommended to continue driving with this code active, as it can lead to further damage to the EGR system and potentially affect the overall performance of the vehicle.

5. How can I repair OBDII code P245A?

Repairing this code often involves replacing the faulty EGR cooler bypass control valve, repairing or replacing damaged wiring or connectors, and clearing the code with a scan tool after completing the repairs.

6. Are there any maintenance tips to prevent OBDII code P245A from recurring?

Regularly inspecting the EGR system for any signs of damage or wear, keeping up with routine maintenance schedules, and using high-quality fuel and additives can help prevent this code from reoccurring.

7. Can a DIY enthusiast fix OBDII code P245A at home?

While some may be able to diagnose and repair this code at home, it is recommended to have a professional mechanic perform the repairs to ensure proper diagnosis and resolution of the issue.

8. How much does it cost to repair OBDII code P245A?

The cost of repairing this code can vary depending on the extent of the damage, the cost of parts, and the labor rates of the repair shop. It is advisable to obtain quotes from different mechanics for an accurate estimate.

9. Will OBDII code P245A cause my vehicle to fail an emissions test?

Yes, this code can potentially cause your vehicle to fail an emissions test, as it indicates a malfunction in the EGR system which plays a crucial role in controlling emissions.

10. How urgent is it to address OBDII code P245A?

It is recommended to address this code as soon as possible to prevent further damage to the EGR system and ensure optimal performance and fuel efficiency of the vehicle.