The P2162: Vehicle Speed Sensor ‘A’/’B’ Correlation refers to a fault detected when the signals from vehicle speed sensor ‘A’ and vehicle speed sensor ‘B’ do not match as expected. This can be caused by faulty sensors, calibration issues, or mechanical problems affecting the performance of the sensors.
P2162 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2162: Vehicle Speed Sensor ‘A’/’B’ Correlation |
| Is it serious? | Yes, this can affect vehicle speed readings and impact performance and safety features. |
| Possible causes | – Mismatch between signals from vehicle speed sensor ‘A’ and ‘B’ – Faulty sensors or calibration issues – Mechanical issues affecting sensor performance |
| How to diagnose? | – Compare the outputs from vehicle speed sensors ‘A’ and ‘B’ – Test both sensors for faults – Inspect mechanical components and sensor calibration |
P2162 Meaning
The P2162: Vehicle Speed Sensor ‘A’/’B’ Correlation code indicates that the vehicle’s engine control module (ECM) has detected a discrepancy between the readings from vehicle speed sensor ‘A’ and sensor ‘B’. These sensors are used to monitor vehicle speed, and a mismatch can cause issues with vehicle performance, such as erratic shifting, improper speedometer function, or impacts to traction control or stability systems.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any other related codes that may provide more insight into the issue. | OBD-II Scanner |
| Compare Sensor Outputs | Use diagnostic software to compare the output signals from vehicle speed sensor ‘A’ and vehicle speed sensor ‘B’. Inconsistencies between the two indicate a correlation issue. | Diagnostic Software, OBD-II Scanner |
| Inspect and Test Sensors | Inspect both sensors visually for damage or wear, and use a multimeter to test each sensor for proper functionality. | Multimeter, Safety Gloves |
| Check Mechanical Components | Inspect any mechanical components that could be affecting the sensors, such as transmission components or sensor mounting. | Flashlight, Wrenches |
| Verify Sensor Calibration | Check the calibration of both vehicle speed sensors and ensure they are working within manufacturer specifications. Recalibrate if needed. | Calibration Tool (if needed) |
| Repair or Replace Faulty Components | If you find any faulty wiring, sensors, or mechanical components, repair or replace them as needed to resolve the issue. | Replacement Parts, Tools |
| Clear the Code and Test Drive | Clear the P2162 code using an OBD-II scanner and test drive the vehicle to ensure that the issue is resolved. | OBD-II Scanner |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure that the P2162 code does not return. | OBD-II Scanner |
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