AutoCodes – Cadillac – P1F02 Cadillac

P1F02 Cadillac Code - Battery Charger Control Module Supply Voltage Sensor Circuit High Voltage

Quick Answer

The battery charger will diagnose its own systems and determine when a fault condition is present. Common causes include Faulty Battery Charger, Battery Charger harness is open or shorted, Battery Charger 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: P1F02 Cadillac indicates Battery Charger Control Module Supply Voltage Sensor Circuit High Voltage.
Common causes: Common causes include Faulty Battery Charger, Battery Charger harness is open or shorted, Battery Charger 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 770

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1F02 Cadillac Description

The battery charger will diagnose its own systems and determine when a fault condition is present. Diagnostics and system status is communicated from the battery charger to the hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for Diagnostic Trouble Code (DTC) information. This DTC is for the battery charger are internal measurements that verify the charger is performing properly. The battery charger measures internal voltages, currents, and temperatures and verifies they are within the proper range.

OBDII Code P1F02 Cadillac - Battery Charger Control Module Supply Voltage Sensor Circuit High Voltage - AutoCodes.com — P1F02 Cadillac Code - Battery Charger Control Module Supply Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1F02 Cadillac?

Faulty Battery Charger
Battery Charger harness is open or shorted
Battery Charger circuit poor electrical connection

How to Fix the DTC P1F02 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 P1F02 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 P1F02 Cadillac Code

1. What does the P1F02 code mean on a Cadillac?

The P1F02 code indicates a problem with the Battery Charger Control Module Supply Voltage Sensor Circuit, specifically detecting a high voltage condition.

2. What are the common symptoms of the P1F02 code on a Cadillac?

Symptoms may include an illuminated check engine light, reduced charging system performance, issues with hybrid or electric vehicle functionality, or limited driving range.

3. What causes the P1F02 code to appear?

Common causes include a faulty Battery Charger Control Module, damaged wiring or connectors in the voltage sensor circuit, or a defective voltage sensor itself.

4. Can I drive my Cadillac with the P1F02 code?

While the vehicle may still be drivable, it could experience reduced performance or charging issues. Prolonged driving without addressing the issue may cause further damage.

5. How is the P1F02 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the wiring and connectors in the sensor circuit, and test the functionality of the Battery Charger Control Module and voltage sensor.

6. How do you fix the P1F02 code on a Cadillac?

Repairs may include replacing damaged wiring, repairing loose connections, or replacing the Battery Charger Control Module or voltage sensor if they are faulty.

7. Is the P1F02 code specific to hybrid or electric Cadillacs?

Yes, this code is typically associated with hybrid or electric Cadillacs that rely on a Battery Charger Control Module for managing the high-voltage system.

8. What tools are needed to repair the P1F02 code?

Diagnostic tools such as an OBDII scanner, a multimeter for electrical testing, and potentially specialized equipment for handling high-voltage systems are needed.

9. How much does it cost to fix the P1F02 code on a Cadillac?

The repair cost can vary widely, ranging from $100 for minor wiring repairs to over $1,000 if the Battery Charger Control Module requires replacement.

10. Can a weak 12V battery cause the P1F02 code?

While unlikely, a weak 12V battery can indirectly affect the charging system and should be tested as part of the diagnostic process.