AutoCodes – GMC – P1F0A GMC

P1F0A GMC Code - A/C Compressor Motor Speed Performance

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: P1F0A GMC indicates A/C Compressor Motor Speed Performance.
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 806

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 P1F0A GMC 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 P1F0A GMC - A/C Compressor Motor Speed Performance - AutoCodes.com — P1F0A GMC Code - A/C Compressor Motor Speed Performance

What does this mean?

What are the Possible Causes of the DTC P1F0A GMC?

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

How to Fix the DTC P1F0A GMC?

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 P1F0A GMC 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 P1F0A GMC 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 P1F0A GMC Code

1. What are common symptoms of OBDII code P1F0A GMC related to A/C compressor motor speed performance?

- Common symptoms include reduced cooling efficiency, intermittent or complete loss of air conditioning, and unusual noises coming from the A/C system.

2. What can cause the OBDII code P1F0A GMC to be triggered for A/C compressor motor speed performance?

- Possible causes include a faulty A/C compressor motor, issues with the compressor clutch, wiring faults, or a problem with the A/C control module.

3. How can I diagnose the OBDII code P1F0A GMC related to A/C compressor motor speed performance?

- Diagnosis involves checking the A/C compressor motor for proper function, inspecting wiring connections for damage, and using a scan tool to analyze the A/C control module data.

4. Can I continue driving with the OBDII code P1F0A GMC related to A/C compressor motor speed performance?

- It is not recommended to drive with this code present, as it can lead to further damage to the A/C system and potentially affect the overall performance of the vehicle.

5. Are there any DIY repair tips for resolving the OBDII code P1F0A GMC for A/C compressor motor speed performance?

- DIY repair options are limited for this code, as it often requires specialized tools and knowledge to diagnose and repair issues related to the A/C compressor motor speed performance.

6. How much does it typically cost to repair the OBDII code P1F0A GMC for A/C compressor motor speed performance?

- Repair costs can vary depending on the specific issue causing the code, but it is recommended to consult with a professional mechanic for an accurate diagnosis and cost estimate.

7. Is it possible to reset the OBDII code P1F0A GMC related to A/C compressor motor speed performance without repairing the issue?

- While clearing the code may temporarily turn off the check engine light, the underlying problem causing the code will persist until properly diagnosed and repaired.

8. Can a faulty A/C compressor motor cause other issues in the vehicle besides triggering the OBDII code P1F0A GMC?

- Yes, a faulty A/C compressor motor can lead to reduced cooling efficiency, increased engine strain, and potential damage to other components in the A/C system if left unresolved.

9. How long does it typically take to repair the OBDII code P1F0A GMC for A/C compressor motor speed performance?

- Repair times can vary depending on the complexity of the issue and the availability of parts, but most repairs related to A/C compressor motor speed performance can be completed within a few hours to a day.

10. Is it possible to prevent the OBDII code P1F0A GMC related to A/C compressor motor speed performance from occurring?

- Regular maintenance of the A/C system, including checking for unusual noises or reduced cooling performance, can help prevent issues that may trigger this code.