AutoCodes – Generic – P1F0C

P1F0C Code - Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit Low 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: P1F0C indicates Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit Low 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 993

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 P1F0C 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 P1F0C - Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit Low Voltage - AutoCodes.com — P1F0C Code - Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1F0C?

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

How to Fix the DTC P1F0C?

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 P1F0C 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.

Need more information about the P1F0C code?

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Get the P1F0C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1F0C Buick — Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit Low Voltage
P1F0C Cadillac — Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit Low Voltage
P1F0C Chevrolet — Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit Low Voltage
P1F0C GMC — Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit Low Voltage
P1F0C Saturn — Electric A/C Compressor Control Module A/C Compressor Motor Current Feedback Circuit Low 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 P1F0C Code

1. What are common symptoms of OBDII code P1F0C?

The common symptoms of code P1F0C include weak or no cold air coming from the air conditioning system, unusual noises from the A/C compressor, and the A/C system not cooling the vehicle interior effectively.

2. What can cause OBDII code P1F0C to trigger?

Code P1F0C is typically triggered by issues with the electric A/C compressor control module, such as a low voltage condition in the A/C compressor motor current feedback circuit. This could be due to a faulty control module, damaged wiring, or a problem with the A/C compressor itself.

3. How serious is OBDII code P1F0C?

Code P1F0C may not cause immediate drivability issues, but it can impact the performance of your vehicle's air conditioning system. It is important to address this code to ensure proper functioning of your A/C system, especially in hot weather.

4. How can I diagnose the cause of OBDII code P1F0C?

Diagnosing code P1F0C typically involves using a diagnostic scanner to read the code and then conducting further testing on the electric A/C compressor control module, wiring, and A/C compressor motor current feedback circuit to pinpoint the exact cause of the issue.

5. Can I still drive my vehicle with OBDII code P1F0C?

It is generally safe to drive your vehicle with code P1F0C, but you may experience reduced A/C performance. It is recommended to address the issue promptly to avoid further damage to the A/C system components.

6. How can I repair OBDII code P1F0C?

Repairing code P1F0C involves inspecting and repairing or replacing the electric A/C compressor control module, checking and repairing any damaged wiring in the A/C compressor motor current feedback circuit, and ensuring the A/C compressor is functioning properly.

7. Can a DIYer fix OBDII code P1F0C?

While some DIYers may have the skills to diagnose and repair code P1F0C, it is recommended to seek professional help, especially when dealing with the electrical components of the A/C system. A qualified mechanic or technician can ensure the issue is properly resolved.

8. How much does it cost to fix OBDII code P1F0C?

The cost of fixing code P1F0C can vary depending on the cause of the issue, the extent of the repairs needed, and labor rates in your area. It is best to get a diagnosis from a mechanic to receive an accurate estimate.

9. Can a faulty A/C compressor cause OBDII code P1F0C?

Yes, a faulty A/C compressor can contribute to triggering code P1F0C, especially if there are issues with the A/C compressor motor current feedback circuit. It is important to inspect the A/C compressor along with the control module and wiring.

10. How long does it take to repair OBDII code P1F0C?

The repair time for code P1F0C can vary depending on the complexity of the issue and the availability of parts. In some cases, it may be a quick fix, while in others, it may take a few hours to diagnose and repair the underlying problem.