P0A71 - OBD Trouble Code

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Is the Check Engine Light illuminated on the instrument panel of your car? Does your car consume all it’s fuel quicker than before? If your answer is “YES” then there is a possibility that your vehicle is indicating a fault in the position and timing of the camshaft. In order to have deeper knowledge of this error code, you will need to go through our following sections.

Now that you have an idea of who set the P0A71 code, it’s time to know some technical bits that will further help you in resolving the code. The inverter of your vehicle is responsible for converting the high-voltage direct current of the HV battery as we all the alternating current for the MG1/MG2. This inverter contains a bridge circuit which has three phases. This bridge circuit consists of six power transistors (for each MG1 and MG2) so that it can convert the direct current and the three-phase alternating current as well. Engine Control Unit controls the HV. It is also responsible for the actuation of the power transistors. ECU receives information that is necessary for effecting control like amperage and voltage via the inverter. This amperage is detected by the motor inverter current sensors through the V and W phase cables, which are present between the inverter and MG1/MG2. At a time when the ECU is able to pick up any malfunctions in the sensor system, it will proceed to set P0A71 code.

What causes this problem with Generator Phase U Current High?

• Fault with the Inverter in Converter Assembly
• Harness of the Inverter with Converter Assembly Is open or shorted
• Inverter with Converter Assembly circuit is showing poor electrical connection

1. Inverter with Converter Assembly - Closely for repairs and fix them to see if the P0A71 code is resolved. Otherwise you will have to replace it.
2. Inverter with Converter Assembly Harness - Replace the harness if the repairs don’t solve the P0A71 code.
3. Engine Control Unit - If you have observed a fault in the ECU repair it , if that’s not helping, you will have to opt for replacement. Order Online easily at Parts Avatar, simply select the ECU compatible with your vehicle's year of manufacture, make and model and place your order. You will receive it in just few days!
4. Inverter Current Sensors - Check if repairs can fix the sensors or go for replacement so that you can get rid of P0A71 code.
5. Powertrain Control Module - You can easily replace the PCM from Parts Avatar simply order online and avail free shipping on orders above CAD $99.
6. Diagnostic Tools - These are very important during diagnosis. At Parts Avatar you can find ones that fit your budget and needs. Order Online from the comfort of your home and receive your order at your doorstep.
7. Engine Control Module - In some cases you will have to replace the ECM. Don’t worry we stock reliable brands and give warranty too. Avoid cross border shipping, delays and customs, we deliver to the remotest corners of Canada from our warehouses across the country.

Willing to know some common symptoms of OBD Code P0A71? Your wish is our demand. Have a look at them below:

Common Symptoms

• High voltage system is not operating properly
• The check engine light is on after the code was set

We have listed out some ways which would help you to correct the occurrence of OBD Code P0A71. They are mentioned here as follows:

• Repair or replace all the faulty wiring, cables, connecters, harnesses etc.
• Repair or replace ECU
• Repair or replace Powertrain Control Module
• Fix issue with the converter assembly

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of Inverter with Converter Assembly, Inverter with Converter Assembly Harness, Engine Control Unit, Inverter Current Sensors and many more. Now all your problems would vanish within no time.

In order to be that DIY guy and to be able to diagnose your vehicle’s problem yourself you will need to keep in mind the following precautions

Get hold of your OBD scanner and connect it to the diagnostic port of your vehicle, retrieve all the codes and remember to freeze fame the data. Also, make note of them all in the order of appearance. If you are able to find codes set prior to P0A71, then you will have to resolve them first. This is an important step, as sometimes previous codes can cause other error codes to set too. After making note of all the codes, clear them and take your vehicle on a test drive to see if the code resets or if the PCM enters readiness more. If the latter happens, then you are having an intermittent condition, this condition may have to worsen before accurate diagnosis can be made.

If you find that the code is reset, then you will have to start your diagnosis with checking all of the electrical system connected with the this issue. You will have to check all the wires, connectors, harnesses etc. for damages like burning, breaks, corrosion, short etc. If you are able to find any of these issues, simply correct them via repairs or go for replacement. After you have sorted the circuitry you will have to clear the codes and again go on a test drive to see if the code returns or the PCM enters readiness mode.

If the code is reset, then you will have to check all the parts pertaining to this problem. For this you will require your specific vehicles Technical Service Bulletins or TSB. Match them to the year of manufacture, make, model and engine. Once you have found it, match it to the symptoms and the error code and see what diagnostic steps are mentioned in the TSB. Apart from having diagnostic tips, the TSB will also have details of the parts and components related to this error. All the manufacturer specified configurations will also be present. Use the directions given by the TSB to fix your problem, the connector pinout charts, and circuit flow charts etc will be extremely helpful and enable you to avoid any misdiagnosis.

If in case you’re feeling overwhelmed and unable to still resolve the problem, approach a professional vehicle diagnostician for it and resolve your issue properly.

Common Mistakes When Diagnosing the P0A71 Code

• Not following the diagnosis procedure correctly
• Hastily concluding an error with the ECU when the wires may be damaged and require repairs/replacements