P0AAF OBD Error Code: Problem & Solutions

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Terrorized? Don’t know what to do about it? Well, all you need is this little guide by Parts Avatar to solve the error code P0AAF. This generic OBD-II code high voltage control module failure is also determined as a hybrid battery pack air temperature sensor "A" circuit high. The battery pack air temperature sensor informs the high voltage control module about the temperature of the ambient air that is present in and around the hybrid battery pack. The error code P0AAF is stored as soon as the hybrid battery pack air temperature sensor transmits a wrong signal to the high voltage control module. In almost all the high voltage vehicles, the battery pack assembly has this temperature sensor installed.

It should be noted that the intake air temperature sensor can be located on the HV battery assembly. When the intake air temperature tends to change, the resistance value changes along with it. The intake air temperature sensor and the battery temperature sensors can be seen sharing similar qualities. The intake air temperature sensor transfers the signals that are further used by the battery ECU for adjusting the air flow speed of the battery blower assembly.

What causes this problem with the Hybrid Battery Pack Air Temperature Sensor "A" Circuit High?

• Distorted HV battery assembly (intake air temperature sensor)
• The harness in the HV battery assembly short circuited or open
• A deficient electrical connection running in the HV battery assembly circuit
• Fault in the battery ECU

1. HV Battery Assembly - It should be noted that the HV battery assemblies help in transferring the right amount of power throughout the system. A fault in the HV battery assembly is likely to trigger problems with the engine such as a sluggish engine crank, rough idle and illuminated malfunction indicator light. Now you can simply overcome the problems caused by the error code by logging into Parts Avatar for your new HV battery assembly. 
2. Battery Cables - Well, defective or corroded battery cables can be the reason behind the error code P0AAF. Along with this, it is likely to cause low battery fluid levels in the system too. Log into Parts Avatar if you want to order new battery cables for your vehicle.
3. Battery ECU - Are you facing problems in starting your vehicle? Also, problems concerning the overall functionality of the vehicle? Well, it could all be due to a damaged battery ECU. Change or repair now before it's too late.
4. Battery Temperature Sensor - This essential unit functions as the chief auto part. A malfunctioning one can lead to sluggish engine crank, slow emissions and more fuel consumption. Get rid of the error code P0AAF now by simply replacing or repairing your malfunctioning battery temperature sensor.

It is vital 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 P0AAF here:

Common Symptoms

• The engine light blinking on (or service engine soon warning light)

Want to correct the trouble code P0AAF? Read these points mentioned below:

• Repairs or replacements should be performed to fix a deficient electrical connection running in the HV battery assembly circuit
• Perform steps to mend or restore a distorted HV battery assembly (intake air temperature sensor)
• A malfunctioning battery ECU should be mended or restored immediately
• Fix all the corroded or open harness in the HV battery assembly

Parts Avatar Canada is here to solve all your issues related to car parts. We have stocked a wide range of best priced HV battery assembly, HV battery assembly harness, battery ECU and a lot more to help you out in fixing your car.

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

It should be noted that merely having a reason behind a bad gasket isn’t enough to prove a failure in the gasket as numerous reasons together result in the failure of the gasket. We recommend you to not use the vehicles while these symptoms are being observed. Based on the symptoms you must either repair or replace the gasket, the cost of which is likely to change from mechanic to mechanic. Well, restoring a gasket can be an expensive affair due to their location and amount of labor required. This code P0AAF is mainly found on vehicles that have an electronically controlled automatic transmission. Also, the 3-4 shift solenoid holds the responsibility of activating the hydraulic circuits to actuate the clutches or bands that change gears present inside the automatic transmission.

Common Mistakes When Diagnosing the P0AAF Code

Only for you we have listed here a few common mistakes that should be avoided while the diagnosis procedure is being performed:

• We thoroughly advise you that before performing the repairs the mechanic should go through the system thoroughly, as at times he may end up performing major repairs that are expensive and time taking while the code could have been solved by just repairing some minor faults.
• Wiring issues.
• Any other stored codes should be treated before the code P0AAF.