AutoCodes – Cadillac – P1F17 Cadillac

P1F17 Cadillac Code - System Isolation/Impact Sensor Fault - Hybrid/EV Battery System Contactors Open

Quick Answer

The hybrid/EV powertrain control module 2 will set DTC P1F17 if the hybrid/EV powertrain control module has detected a passive loss of isolation, the supplemental inflatable restraint sensors are not working or has lost communication with the hybrid/EV powertrain control module or the supplemental inflatable restraint module. Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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: P1F17 Cadillac indicates System Isolation/Impact Sensor Fault - Hybrid/EV Battery System Contactors Open.
Common causes: Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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 958

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 Apr 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1F17 Cadillac Description

OBDII Code P1F17 Cadillac - System Isolation/Impact Sensor Fault - Hybrid/EV Battery System Contactors Open - AutoCodes.com — P1F17 Cadillac Code - System Isolation/Impact Sensor Fault - Hybrid/EV Battery System Contactors Open

What does this mean?

What are the Possible Causes of the DTC P1F17 Cadillac?

Faulty Hybrid/EV Powertrain Control Module 2
Hybrid/EV Powertrain Control Module 2 harness is open or shorted
Hybrid/EV Powertrain Control Module 2 circuit poor electrical connection

How to Fix the DTC P1F17 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 P1F17 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 P1F17 Cadillac Code

1. What does the OBDII code P1F17 mean on a Cadillac?

Code P1F17 indicates a "System Isolation/Impact Sensor Fault" related to the hybrid or electric vehicle battery system, often caused by the battery contactors being open or a fault in the isolation system.

2. What are the common symptoms of code P1F17 on a Cadillac?

Symptoms may include the vehicle not starting, high-voltage system faults, reduced power or performance, and warning lights such as the Check Engine Light or Hybrid System Malfunction indicator.

3. What causes code P1F17 on a Cadillac?

Common causes include a faulty impact sensor, open or stuck hybrid/EV battery system contactors, wiring or connection issues in the high-voltage system, or a malfunctioning battery control module.

4. Can I drive my Cadillac with code P1F17 active?

It is not recommended to drive with this code active. The hybrid or EV battery system may not operate safely, potentially leading to reduced performance or complete power loss.

5. How is code P1F17 diagnosed?

A technician will typically use a scan tool to check for related codes, inspect the hybrid/EV battery contactors and impact sensor, test wiring and connections, and evaluate the system's isolation resistance.

6. How do you fix code P1F17 on a Cadillac?

Repairs may involve replacing a faulty impact sensor, repairing or replacing stuck or damaged battery contactors, fixing wiring or connector issues, or reprogramming or replacing the battery control module.

7. Does code P1F17 require a battery replacement?

Not necessarily. While the code involves the high-voltage battery system, the issue may be with the contactors, wiring, or control modules rather than the battery itself.

8. What tools are needed to diagnose code P1F17?

Diagnosing this code typically requires a professional-grade OBDII scanner with hybrid/EV system capabilities, a multimeter, and possibly an insulation tester for high-voltage components.

9. Can code P1F17 be triggered by an accident?

Yes, this code can be triggered if the impact sensor detects a collision or if the system isolates the high-voltage battery as a safety measure after an accident.

10. How much does it cost to repair code P1F17 on a Cadillac?

Repair costs can vary widely depending on the specific issue, ranging from $200 for minor wiring repairs to over $1,000 for contactor or control module replacements.