Error Code P0501: What It Means & What To Do?

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This diagnostic fault code is a generic powertrain code, which means that it would apply to the OBD-II equipped vehicles. The specific repair steps can vary as it depends upon the vehicle make and model.

The P0501 error code can be identified as Vehicle Speed Sensor Range/Performance. When the engine control module would get an input from the vehicle speed sensor that it is out of range or an erratic voltage output that is not stable or smooth, with movement up or down, then the fault code P0501 would start appearing.

What causes this problem with the Vehicle Speed Sensor “A” Range/Performance?

• There is a broken/frayed wire leading to the vehicle speed sensor
• The vehicle's PCM might not be correctly configured for the actual tire size on the vehicle
• The vehicle speed sensor might not be functioning properly

1. Engine Control Module - The P0501 code can also arise due to some issues in Engine Control Module. So, it is advised to replace them as soon as possible.
2. Powertrain Control Module - Do you remember when was the last time you got your car Powertrain Control Module checked up? A damaged Powertrain Control Module can cause a lot of issues like displaying P0501 code.
3. ABS System Parts - ABS System Parts is an important car part which should never be neglected. May be there is some fault in it due to which P0501 code may start flashing.
4. Tachometer - Is your Tachometer damaged or broken? Don’t worry as we have solutions for all your problems.
5. Engine Wiring Harness - Defective car Engine Wiring Harness can be a major reason why P0501 code depicts. So, make sure to replace it online so that you don’t have to face any further issues.
6. Electronic Control Unit - Everything is okay with the Engine Wiring Harness and still OBD code P0501 triggering? Then there must be some defects in Electronic Control Unit. Replace them as soon as possible.
7. Speedometer - Speedometer is an important auto part. Take care of it and you can rely on us to purchase best quality Speedometer online.

Willing to know some common symptoms of OBD Trouble Code P0501? Your wish is our demand. Have a look at them below:

Common Symptoms

• The speedometer or odometer might not function properly
• Decrease in the vehicle's RPM limiter
• There can be loss of anti-lock brakes
• The "anti-lock" or "brake" warning lamps on the dash may be lit
• The shifting of an automatic transmission may become erratic
• Presence of some other symptoms as well

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 P0501:

• The faulty VSS in the transmission or rear end should be replaced
• You can always repair the wire connection to the VSS
• Clean off metal particles, then clear the codes and after that a road test should be performed

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If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

• First of all, carefully scan the codes and documents the code in the engine control module
• Monitor the VSS signal while driving at known speeds using a GPS signal or another vehicle and see if the speedometer is accurate within a few miles per hour
• Inspect the VSS electrical connection for loose or corroded connections
• Carefully remove the VSS and look at the tip of sensor for metal particles causing the weak signal, clean and then retest for proper operation

Common Mistakes When Diagnosing The P0501 Code

• Many a times a mechanic do not verify that the output is bad from the old sensor before replacing the VSS
• Another big mistake can be to not remove and check the VSS for excessive metal particles, indicating a problem with internal transaxle or rear axle components