AutoCodes – Cadillac – P245D Cadillac

P245D Cadillac Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage

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: P245D Cadillac indicates Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage.
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 363

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 P245D Cadillac 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 that the EGR cooler bypass valve control circuits are shorted to voltage for greater than 3 s.

OBDII Code P245D Cadillac - Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage - AutoCodes.com — P245D Cadillac Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P245D Cadillac?

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 P245D Cadillac?

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 P245D Cadillac 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.

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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 P245D Cadillac Code

1. What are the common symptoms of OBDII code P245D in a Cadillac related to the Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit High Voltage?

The common symptoms include reduced engine performance, rough idling, decreased fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P245D in a Cadillac indicating high voltage in the EGR Cooler Bypass Control Circuit?

Possible causes include a faulty EGR cooler bypass control solenoid, damaged wiring or connectors in the circuit, a malfunctioning EGR valve, or issues with the engine control module (ECM).

3. How can I diagnose the source of OBDII code P245D in my Cadillac with a high voltage issue in the EGR Cooler Bypass Control Circuit?

Diagnosis involves using an OBDII scanner to retrieve the trouble code, visually inspecting the EGR system components for any visible damage, testing the EGR cooler bypass control solenoid and related circuitry, and checking the EGR valve for proper operation.

4. Can I continue driving my Cadillac with OBDII code P245D related to the EGR Cooler Bypass Control Circuit High Voltage?

It is not recommended to continue driving with this code present, as it can lead to further damage to the engine components and potentially affect vehicle performance.

5. What are some repair tips for addressing OBDII code P245D in a Cadillac due to high voltage in the EGR Cooler Bypass Control Circuit?

Repair tips include replacing the faulty EGR cooler bypass control solenoid, repairing or replacing damaged wiring or connectors, cleaning or replacing the EGR valve, and clearing the trouble code with an OBDII scanner.

6. How much does it typically cost to repair OBDII code P245D in a Cadillac caused by a high voltage issue in the EGR Cooler Bypass Control Circuit?

The cost of repairs can vary depending on the specific cause of the issue, but it may range from $200 to $500 for parts and labor.

7. Is it possible to prevent OBDII code P245D related to the EGR Cooler Bypass Control Circuit High Voltage in a Cadillac?

Regular maintenance of the EGR system, such as cleaning the components and checking for leaks, can help prevent issues that may trigger this code. Additionally, driving gently and avoiding harsh acceleration can help prolong the life of EGR system components.