P1F0D Buick 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 Buick 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.
Code P1F0D Buick Description
- 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.
What are the Possible Causes of the DTC P1F0D Buick?
- 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 Buick?
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 Buick 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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Frequently Asked Questions about P1F0D Buick Code
1. What does the OBDII code P1F0D mean on a Buick?
The P1F0D code indicates an issue with the Electric A/C Compressor Control Module, specifically the A/C Compressor Motor Current Feedback Circuit, detecting high voltage.
2. What are the common symptoms of the P1F0D code?
Common symptoms include reduced or no air conditioning performance, unusual noises from the A/C system, and possible illumination of the check engine or A/C warning light.
3. What causes the P1F0D code to be triggered?
This code is typically caused by a malfunction in the A/C compressor motor, a wiring issue in the feedback circuit, or a fault in the Electric A/C Compressor Control Module.
4. Can I drive my Buick with the P1F0D code present?
While it may be safe to drive with this code, your A/C system may not function properly, particularly in extreme temperatures. Prolonging repairs could also risk further damage to the compressor system.
5. How is the P1F0D code diagnosed?
A technician will use a scan tool to confirm the code, inspect the A/C compressor motor circuit for wiring issues, and test the functionality of the Electric A/C Compressor Control Module.
6. What are common fixes for the P1F0D code?
Repairs may include replacing the A/C compressor, repairing or replacing damaged wiring in the feedback circuit, or replacing the Electric A/C Compressor Control Module.
7. How much does it cost to fix the P1F0D code on a Buick?
The repair cost can vary, but replacing the A/C compressor typically ranges from $800 to $1,500, depending on the vehicle model and labor rates.
8. Can a low refrigerant level cause the P1F0D code?
No, low refrigerant levels do not directly trigger this code, as it relates to electrical feedback rather than refrigerant pressure.
9. Is the P1F0D code specific to Buick vehicles?
While this code is more common on Buicks with electric A/C compressors, other vehicles with similar systems may also experience it.
10. How can I prevent the P1F0D code from occurring?
Regular maintenance of the A/C system, including inspections of wiring and electrical components, can help reduce the likelihood of this code appearing.
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