P0946 OBD Error Code: Problem & Solutions

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The trouble code P0946 can be explained as Hydraulic Pump Relay Circuit Range/Performance. If unusual high rate of voltage flow within the exhaust gas recirculation system, or EGR is detected by the powertrain control module, then it would give rise to the P0946 fault code. This trouble code is generally related with the P0945, P0947, P0948 and P0949 error code which would indicate that the voltage within the same system is out of range.

Do you want to know more about the P0946 fault code? Don’t worry! Parts Avatar Canada is here at your service. This code is a generic trouble code, meaning it applies to all vehicles equipped with the OBD-II system, especially those made from 1996 up to present. It’s also more common among Audi, Citroen, Chevrolet, Ford, Hyundai, Nissan, Peugeot, and Volkswagen vehicles. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model, powertrain configuration type, to another.

What causes this problem with the Hydraulic Pump Relay Circuit Range/Performance?

• There can be inoperative hydraulic pump relay
• Hydraulic pump relay harness is unlocked or small
• Hydraulic pump relay circuit might have bad electrical connection

1. Engine Oil Pressure Switch - A faulty Engine Oil Pressure Switch can be troublesome. You can always rely on us as we have best auto parts for our customers.
2. Auto Transmission Shift Solenoid - If everything is alright with PCM, then there is surely some defect in Auto Transmission Shift Solenoid. Get it replaced before the situation gets worse.
3. Hydraulic Oil Temperature Sensor - P0946 code can display due to some faults in the Hydraulic Oil Temperature Sensor. So it is very important to replace the Hydraulic Oil Temperature Sensor with us at equitable prices.
4. Oil Pressure Sender - Do you remember when was the last time you got your car Oil Pressure Sender checked up? A dirty Oil Pressure Sender can cause a lot of issues like displaying P0946 code.
5. Body Control Module Component - Poor Body Control Module Component can cause a lot of difficulties, so why not get it replaced at time?
6. Powertrain Control Module - Are there some faults in your Powertrain Control Module? Don’t waste time and get them replaced or else P0946 code can turn up.
7. Auto Transmission Control Module - OBD Code P0946 can appear because of faulty Auto Transmission Control Module.
8. Air Pressure Gauge - Everything is fine with Powertrain Control Module and still P0946 code triggering? Then you must get your Air Pressure Gauge checked.

There could be countless symptoms which that would accompany with this fault code. Willing to know some common symptoms of OBD Trouble Code P0946? Your wish is our demand. Have a look at them below:

Common Symptoms

• The service engine soon light can start lighting up

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• Make sure to mend the faulty hydraulic pump relay
• Recondition the non-functioning hydraulic pump relay circuit
• It is necessary to perform proper service of the unsound hydraulic pump relay harness

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It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0946 code to be stored:

• This is a general type of error code which is diagnosed with the help of a scanner.
• The mechanic will insert a scanner to diagnostic port of the vehicle and recover the codes and freeze frame data.
• If he happens to find any additional error codes, he has to address them as well.
• Once it is done, he has to reset the vehicle, and then test drive to see if the error codes appear.
• If the error code does not return, then there can be an erratic condition.
• Then the mechanic has to check the wires, connectors and other electrical components and quickly replace them if he finds them to be damaged or defective.

Common Mistakes When Diagnosing The P0946 Code

• There can be some defects in the hydraulic pump relay
• Transmission control module might start failing
• Some issues related to the wiring