P0940 - OBD Trouble Code

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The trouble code P0940 can be described as Hydraulic Oil Temperature Sensor Circuit High. 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.

Don’t worry if P0940 error code is triggering again and again. We offer a wide range of auto parts at affordable prices to our dear customers.The hydraulic oil temperature sensor is being monitored by the transmission control module.This error code would be set by the TCM when the hydraulic oil temperature sensor would not be as per the parameters set by the manufacturer.

What causes this problem with the Hydraulic Oil Temperature Sensor Circuit High?

• Malfunctioning hydraulic oil temperature sensor
• Hydraulic oil temperature sensor harness might be opened or shorted
• Hydraulic oil temperature sensor circuit bad electrical connection
• Imperfect transmission control module

1. Auto Transmission Control Module - Do you remember when was the last time you got your car Auto Transmission Control Module checked up? A dirty Auto Transmission Control Module can cause a lot of issues like displaying P0940 code.
2. Oil Pressure Sender - Poor Oil Pressure Sender can cause a lot of difficulties, so why not get it replaced at time?
3. Auto Transmission Shift Solenoid - Are there some faults in your Auto Transmission Shift Solenoid? Don’t waste time and get them replaced or else P0940 code can turn up.
4. Body Control Module Component - OBD Code P0940 can appear because of faulty Body Control Module Component.
5. Powertrain Control Module - Everything is fine with Body Control Module Component and still P0940 code triggering? Then you must get your Powertrain Control Module checked.
6. Hydraulic Oil Temperature Sensor - There can be some issues with the Hydraulic Oil Temperature Sensor due to which you may see P0940 code appearing over and over again. Visit us to buy best quality Hydraulic Oil Temperature Sensor online.
7. Engine Oil Pressure Switch - A lot of issues can arise do to defective Engine Oil Pressure Switch. Did you just see P0940 code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
8. Air Pressure Gauge - Faulty Air Pressure Gauge can be the reason why P0940 code is flashing. Visit us to purchase top notch Air Pressure Gauge online.

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P0940 code by mentioning some major symptoms below:

Common Symptoms

• The service engine soon light can start lighting up

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P0940:

• You must utilize a scanner to monitor the function of the EGR
• Make sure to mend the faulty control solenoid
• It is essential to restore the flawed EGR valve
• Repair or replace the quirky DPFE sensor
• Then the vacuum line should be disconnected and after that you can manually apply vacuum to the EGR valve to observe the operation
• The EGR valve should then be removed and then clear all the clogs
• Rehabilitate the defaults in the computer
• Recondition the non-functioning connectors and wiring for the PCM

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

• As an initial step the mechanic will carefully inspect the vehicle with the help of a scanner.
• After this, the technician will connect a scanner to the diagnostic code so that he can recover all the codes and freeze frame data.
• Note down this information as it can clearly help for further diagnosis.
• The mechanic will also inspect the shift solenoid to find if it is disconnected or if any other faults persist.
• After careful inspection, he will reset the code and test drive your vehicle to check for reappearance of the codes.
• He will know that an intermittent condition persist, if the code does not return instantly.
• But if the error code returns quickly, the vehicle is test driven, and then he has to inspect the transmission fluid.
• The transmission fluid can be dirty or there can be any blocks in the transmission filter which can be replaced instantly.
• At times, the fluid level will be insufficient which has to be fixed immediately. If he comes across any leaky areas, he will fix them too.
• Once the fluid is checked for appropriate level, then every other components like wires and connectors have to be checked for possible damages.
• If any of the component is damaged, the mechanic will replace them quickly.
• In this scenario, the error code mostly arises due to a dirty transmission fluid where it can also be contaminated or the shift solenoid is broken.
• Most often, whenever the mechanic carries out any repair work, he will reset the code and test drive your car, to check if the codes return immediately.
• This can preferably help the mechanic to know what caused this error code in the vehicle.

Common Mistakes When Diagnosing The P0940 Code

• Non performance of the hydraulic oil temperature sensor
• Failure in the transmission control module
• There can be some issues related to the wiring

P0941 - Hydraulic Oil Temperature Sensor Circuit Intermittent