AutoCodes – Cadillac – P0617 Cadillac

P0617 Cadillac Code - Starter Relay Control Circuit High Voltage

Quick Answer

When the ignition switch is placed in the START position, a discrete signal is supplied to the Body Control Module (BCM) notifying it that the ignition is in the START position. Common causes include Faulty Starter Relay, Starter Relay harness is open or shorted, Starter Relay circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0617 Cadillac indicates Starter Relay Control Circuit High Voltage.
Common causes: Common causes include Faulty Starter Relay, Starter Relay harness is open or shorted, Starter Relay circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 553

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jul 15, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0617 Cadillac Description

When the ignition switch is placed in the START position, a discrete signal is supplied to the Body Control Module (BCM) notifying it that the ignition is in the START position. The BCM then sends a message to the Engine Control Module (ECM) that a crank has been requested. The ECM then verifies that the clutch pedal is depressed, or the transmission is in Park/Neutral. If it is, the ECM then supplies 12 V to the control circuit of the starter relay. When this occurs, battery voltage is supplied through the switch of the starter relay to the starter solenoid. The Diagnostic Trouble Code (DTC) will be set when the ECM detects improper voltage on the control circuit of the starter relay.

OBDII Code P0617 Cadillac - Starter Relay Control Circuit High Voltage - AutoCodes.com — P0617 Cadillac Code - Starter Relay Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0617 Cadillac?

Faulty Starter Relay
Starter Relay harness is open or shorted
Starter Relay circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0617 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 P0617 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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Need Help with the Code?

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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 P0617 Cadillac Code

1. What does the OBDII code P0617 mean on a Cadillac?

P0617 indicates a "Starter Relay Control Circuit High Voltage" issue, which means the engine control module (ECM) has detected an abnormally high voltage in the starter relay control circuit.

2. What are the common symptoms of code P0617 in a Cadillac?

Symptoms may include the engine failing to start, intermittent starting issues, a check engine light, or unresponsive ignition when turning the key.

3. What causes the P0617 code to appear in a Cadillac?

Common causes include a faulty starter relay, damaged wiring or connectors in the starter circuit, a failing ignition switch, or a malfunctioning ECM.

4. Can a bad battery cause the P0617 code on a Cadillac?

Yes, a weak or failing battery can cause voltage irregularities in the starter circuit, potentially triggering the P0617 code.

5. How can I troubleshoot the P0617 code in my Cadillac?

Start by inspecting the starter relay, wiring, and connectors for damage or corrosion. Check the battery voltage and test the relay for proper function. If no issues are found, the ECM may need diagnostic testing.

6. Is it safe to drive with the P0617 code active on a Cadillac?

Driving may be possible, but starting issues could leave you stranded. It’s best to address the problem promptly to avoid further damage or inconvenience.

7. How do you fix the P0617 code on a Cadillac?

Repairs may include replacing the starter relay, repairing or replacing damaged wiring, testing and replacing the ignition switch, or reprogramming or replacing the ECM if necessary.

8. What tools are needed to diagnose the P0617 code on a Cadillac?

You’ll need an OBDII scanner, a multimeter to test voltage and continuity, and possibly wiring diagrams for the starter circuit.

9. How much does it cost to repair the P0617 code on a Cadillac?

Repair costs vary but typically range from $100 to $400 depending on whether the issue lies with the relay, wiring, or ECM.

10. Can an aftermarket starter relay cause the P0617 code in a Cadillac?

Yes, an improperly matched or defective aftermarket starter relay can cause voltage issues and trigger the P0617 code. Always use OEM or compatible parts.