The P2160: Vehicle Speed Sensor ‘B’ Circuit Low refers to a condition where the voltage in the vehicle speed sensor ‘B’ circuit is lower than expected. This could be due to faulty wiring, a malfunctioning sensor, or issues with the power supply to the sensor.
P2160 – Quick Overview
Code | Information |
---|---|
Meaning | P2160: Vehicle Speed Sensor ‘B’ Circuit Low |
Is it serious? | Yes, it can affect vehicle performance and cause inaccurate speed readings. |
Possible causes | – Low voltage or faulty wiring in the vehicle speed sensor ‘B’ circuit – Faulty vehicle speed sensor ‘B’ – Issues with the power supply to the sensor |
How to diagnose? | – Inspect and measure voltage in the vehicle speed sensor ‘B’ circuit – Test the vehicle speed sensor ‘B’ – Check wiring and connections for faults |
P2160 Meaning
The P2160: Vehicle Speed Sensor ‘B’ Circuit Low code indicates that the voltage supplied to the vehicle speed sensor ‘B’ is below the required level for normal operation. This low voltage may be caused by a malfunctioning sensor, damaged wiring, or a power supply issue, which can affect the sensor’s ability to correctly report vehicle speed to the engine control module (ECM).
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to check for any additional related codes that may provide more insight into the issue. | OBD-II Scanner |
Inspect Wiring and Connections | Visually inspect the wiring and connections leading to the vehicle speed sensor ‘B’ for signs of damage, corrosion, or wear. | Flashlight, Safety Gloves |
Measure Voltage in Sensor Circuit | Use a multimeter to measure the voltage in the vehicle speed sensor ‘B’ circuit. Compare the readings with manufacturer specifications to detect low voltage. | Multimeter, Vehicle Manual |
Test Vehicle Speed Sensor ‘B’ | Test the vehicle speed sensor ‘B’ using diagnostic tools to ensure it is functioning properly. Replace it if the sensor is faulty. | Diagnostic Tool, Multimeter |
Check Power Supply | Inspect the power supply to the vehicle speed sensor ‘B’. Ensure the sensor is receiving the correct voltage and there are no issues with the supply. | Multimeter, Wiring Diagrams |
Repair or Replace Faulty Components | Repair or replace any faulty wiring, connections, or the vehicle speed sensor ‘B’ as necessary. | Replacement Parts, Tools |
Clear the Code and Test Drive | After making repairs, clear the P2160 code using an OBD-II scanner and take the vehicle for a test drive to verify that the issue has been resolved. | OBD-II Scanner |
Recheck for Codes | After the test drive, re-scan the vehicle to ensure that the P2160 code does not return. | OBD-II Scanner |

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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)