AutoCodes – Generic – P1F0D

P1F0D Code - Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit High Voltage

Quick Answer

The AC compressor function is to provide refrigerant flow in the AC refrigerant loop to help cool down the cabin, help dehumidify the air in a defrost mode and help maintain the battery temperature. Common causes include Faulty A/C Compressor, A/C Compressor harness is open or shorted, A/C Compressor 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: P1F0D indicates Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit High Voltage.
Common causes: Common causes include Faulty A/C Compressor, A/C Compressor harness is open or shorted, A/C Compressor 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 1,017

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 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1F0D Description

The AC compressor function is to provide refrigerant flow in the AC refrigerant loop to help cool down the cabin, help dehumidify the air in a defrost mode and help maintain the battery temperature. Rather than a more typical pulley, the A/C compressor uses a 3-phase alternating current, high voltage electric motor to operate. It has an on-board inverter that takes High Voltage direct current from the vehicle's High voltage battery and inverts it to alternating current for the motor. The AC compressor shall be activated when any of the three following events occur:
- The customer pushes the AC button
- The HVAC control, in AUTO mode, requests the electric AC compressor on to help in cooling the cabin or removing moisture in the defrost mode
- The High Voltage Battery Thermal System requests the AC compressor on to help maintain the battery temperature
The Hybrid/EV Powertrain Control Module 2 uses values from the A/C refrigerant pressure transducers, A/C refrigerant thermistor, duct temperature sensors, ambient air temperature sensor, passenger compartment temperature sensor, evaporator temperature sensor, battery cell temperature sensors, battery coolant temperature sensors and battery coolant pumps to determine the speed at which the compressor will operate. This message is sent from the Hybrid/EV Powertrain Control Module 2 to the A/C compressor control module via serial data message.
AC Compressor has a motor start up procedure that can take a variable length of time to run to bring the motor up to requested speed. Length of time is dependent on external conditions such as under-bonnet temperature and high side pressure. In hotter conditions, the motor start up time will be longer. The A/C compressor control module monitors an internal parameter known as the DC link current which is based off DC input current. It is not possible to measure this parameter externally.

OBDII Code P1F0D - Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit High Voltage - AutoCodes.com — P1F0D Code - Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1F0D?

Faulty A/C Compressor
A/C Compressor harness is open or shorted
A/C Compressor circuit poor electrical connection

How to Fix the DTC P1F0D?

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 P1F0D 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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Information for Specific Makes

P1F0D Buick — Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit High Voltage
P1F0D Cadillac — Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit High Voltage
P1F0D Chevrolet — Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit High Voltage
P1F0D GMC — Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit High Voltage
P1F0D Saturn — Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit High Voltage

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 P1F0D Code

1. What does the OBDII code P1F0D mean?

P1F0D indicates a high voltage issue in the A/C compressor motor current feedback circuit, specifically related to the electric A/C compressor control module.

2. What are the common symptoms of code P1F0D?

Symptoms include the A/C not working, reduced cooling efficiency, abnormal noises from the compressor, or the check engine light being illuminated.

3. What causes the P1F0D code to appear?

Common causes include a faulty A/C compressor control module, damaged wiring or connectors in the feedback circuit, or issues with the A/C compressor motor itself.

4. Can I still drive my car with the P1F0D code?

While the vehicle may still be drivable, ignoring the code can lead to further damage to the A/C system or related electrical components.

5. How is the P1F0D code diagnosed?

A mechanic will typically use a scan tool to confirm the code, inspect the wiring and connectors, and test the A/C compressor motor and control module for faults.

6. How do you fix the P1F0D code?

Repairs may involve replacing the A/C compressor control module, repairing damaged wiring or connectors, or replacing the electric A/C compressor if it is faulty.

7. Is the P1F0D code specific to certain vehicles?

Yes, this code is more common in hybrid or electric vehicles equipped with electric A/C compressors.

8. What tools are needed to repair the P1F0D code?

A diagnostic scan tool, a multimeter for electrical testing, and possibly specialized tools for working on high-voltage A/C systems are typically required.

9. How much does it cost to fix the P1F0D code?

Repair costs can range from $300 to $2,000 depending on whether the issue involves simple wiring repairs or a full replacement of the A/C compressor or control module.

10. Can a faulty battery or alternator cause the P1F0D code?

Unlikely, as this code is specifically related to the A/C compressor motor feedback circuit, not the general electrical system. However, an unstable power supply could exacerbate the issue.