Error Code P215A: What It Means & What To Do?

It is the output speed sensor as well as the wheel speed sensor which would both detect the speed of the automobile but each constituent of a separate network. Here, the output speed sensor belongs to the powertrain control network while the wheel speed sensor is a part of the antilock brake system network.

What causes this problem with the Vehicle Speed - Wheel Speed Correlation?

• Immoderate metallic debris on output/wheel speed sensor magnet
• Malfunctioning wheel speed/vehicle speed sensor
• The wiring or connectors might be flawed
• There can be distorted reluctor ring teeth
• Defective PCM, ABCM, or EBCM

1. Speed Sensor - The real gear ratio of the transmission while in use is calculated by the transmission speed sensors. Generally there are two speed sensors, which would work together to provide right transmission data to the automobile’s powertrain control module. If there are some faults in your speed sensor, then you must get it replaced!
2. Electronic Control Unit – ECU monitors the temperature differences in the boost converter with the help of the temperature sensors to prevent the converter from overheating and malfunctioning. Thus, replace faulty ECU immediately.
3. Engine Wiring Harness - The broken wires in the wiring harness might lead to some serious engine problems. So make sure that you replace your faulty engine wiring harness to avoid such situation.
4. Engine Control Module - ECM failures and faults can be very difficult to find and resolve as these are very rare and might require a complete reprogramming of the system to avoid wrong codes from getting stored in the system, leading to misdiagnosis. Replace it now!
5. Powertrain Control Module - Faulty PCM can disrupt the normal functioning of the vehicle by affecting the transmission system and the fuel delivery system. This will cause the system to store wrong OBD error and thus can lead to misdiagnosis.
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We care for our customers and that’s why we can totally understand your problem. That’s the reason why we have listed out some major symptoms behind the flashing up of OBD Code P215A. They are mentioned here as follows:

Common Symptoms

• Unpredictable speedometer
• Unintentional ABS or traction control system (TCS) activation
• Improper transmission shift patterns
• ABS codes might be stored
• The ABS may be deactivated

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 P215A:

• You must fix the defective wiring or connectors
• It is essential to restore the flawed output/wheel speed sensor magnet
• Rehabilitate the defaults in the wheel speed/vehicle speed sensor
• Carefully adjust the faults in the PCM, ABCM, or EBCM
• Recondition the non-functioning reluctor ring teeth

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Do you wish to diagnose P215A error code easily? Here are some steps which you should follow in order to diagnose this fault code:

First of all you should connect the positive test lead of the scope to the signal circuit of the sensor which is being inspected. Then you should select the appropriate voltage setting on the scope. The negative test lead should be connected to the ground sensor or battery ground. Now when the drive wheels are off the ground and the automobile is fully secured, then you should run up the drivetrain and at the same time the waveform on the scope display should be observed. It is essential to search for an even waveform pattern with no voltage spikes or glitches as it would be helpful in easily accelerating/decelerating through all the gears. Now if all the inconsistencies have been located, then you must examine the faulty sensor or a bad electrical connection.

Common Mistakes When Diagnosing The P215A Code

• The most common mistake while diagnosing this code is missing out on diagnosing steps which further leads to the expensive and unnecessary replacements. It is always recommended to seek help of experienced diagnostician to avoid any mistakes.

P215B - Vehicle Speed - Output Shaft Speed Correlation