Error Code P06A0: What It Means & What To Do?

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As noted from the code, this error has everything to do the with the variable A/C compressor control unit. The purpose of this is to engage and disengage the compressor at the right time to ensure the desires temperature is maintained within the cabin of your vehicle. The Engine Control Unit or ECU, is able to detect any malfunctions occurring in various vehicle components, via voltage signals. Several components are incorporated within the A/C compressor control circuit, so that it can perform its function. When the ECU detects abnormal signals within the A/C compressor control circuit code it will set P06A0 error code, and you will observe that the ‘check engine’ light is activating.

You have now established that it is the PCM that controls the A/C compressor, when the voltage can’t be controlled by the PCM it will set code P06A0.

What causes this problem with the Variable A/C Compressor Control Circuit?

• Defectiveness in the compressor of A/C
• Defectiveness in the A/C solenoid
• Noticeably low or overcharged system
• A significantly clogged orifice tube or dryer
• Malfunction in the climate control
• Defectiveness in the A/C relay, a blown fuse or fusible link
• Connectors are corroded or damaged
• Improper or even damages in the wiring
• Malfunctioning ECU

1. A/C Compressor - You will most likely need to replace the compressor, so don’t compromise on quality and opt for only the best from Parts Avatar.
2. A/C Solenoid - Repair if possible, otherwise you will have to buy a new one.
3. Orifice Tube/Dryer - Depending on the extent of damage, you may be able to get by with repair. Otherwise replace it.
4. A/C Relay - Try to fix issue with the replay, if that doesn't help you will have to replace it.
5. Engine Control Unit - Your mechanic will inform you if repairing won’t cut it, buy the perfect ECU for your vehicle on Parts Avatar
6. A/C Diagnostic Machine - A very important tool for diagnosing the error, buy online at Parts Avatar.
7. Multimeter - Another tool necessary for diagnosis.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P06A0 here:

Common Symptoms

• Your car's air conditioner will not work as usual
• The check engine light is illuminated

Here are some ways with the help of which you will be able to correct the OBD Code P06A0

• Replace the entire the A/C compressor
• Replacement of the A/C solenoid
• Orifice tube or dryer replacement
• Replacing all the blown fuses or fusible links
• Repair A/C system leaks found
• Cleaning connectors of all the corrosion
• Repairing or replacing of the faulty wiring as per need
• Evacuating and recharging the entire system
• Flashing or replacing the whole ECU

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade A/C Compressor, A/C Solenoid, Orifice Tube/Dryer, A/C Relay, Blown Fuse, Fusible Link, Engine Control Unit, A/C Diagnostic Machine, Multimeter and a lot more for our precious customers.

Here are some steps which you should follow in order to diagnose this fault code:

Step 1 - Look through the troubleshooting process mentioned in your vehicles TSB, match it to your exact vehicle. The TSBs can be a very useful source of information when diagnosing any OBD error, the manufacturer gives plenty information that can be relied on blindly. This in-turn saves a lot of time in trial and error, and helps diagnosis be as accurate as possible.

Step 2 - Now you will visually inspect all the components and circuitry for obvious defects like scraping, burn spots, rubbing or bare wires. Then, move on to checking the connectors and see how secure they are, or if they’re showing symptoms of corrosion or any damaged pins. Ensure you check the A/C compressor, associated sensors, relays and the ECU in this step.

Step 3 - In this step few tools will be required, so procure a digital multimeter and the specific technical references for your vehicle, the A/C diagnostic machine is the ideal tool for this troubleshooting process. So, get hold of that if possible.

The reason why this specialised equipment holds importance is because it can help pin put the source of malfunction accurately. It does so by identifying any leaks and verifying pressures within the system. The integrity of the A/C compressor can also be concluded by the high and low side gauges, other issues like restrictions within the system (clogged orifice tube or dryer), appropriate amount of refrigerant present in the system etc. can also be correctly identified. To prevent possible damages to the A/C compressor; safety switches, fuses and fusible links are commonly incorporated.

Step 4 - Refer the guidelines for specific troubleshooting, you will know the correct voltage ranges required for the different A/C components. Subject to the configuration of your vehicle several components are already incorporated like the compressor of A/C, relays and solenoids for some applications. You may notice that this troubleshooting process is more complicated in the climate control on certain newer automobiles. Requirements of voltage also vary as per year and model of vehicle; hence it is important that the TSB is referred to and kept handy at all times.

Step 5 - During this diagnostic process if you identify an absence of a power source or ground then you will have to stop and check the situation of the wiring, connectors and other components. When performing continuity tests, ensure that the power is removed from the circuit and that the normal readings for wiring and connections show 0 Ohms of resistance. You will easily be able to draw conclusions now, as a resistance/no continuity is indicative of faulty wiring, which may be open or shorted. It must then me repaired if possible or replaced immediately.

Common Mistakes When Diagnosing the P06A0 Code

• Failure of the A/C compressor
• Failed A/C compressor relay
• A failed Powertrain Control Module (PCM)
• Problem noticed with wiring