The P2846: Shift Fork ‘B’ Position Sensor Incorrect Neutral Position Indicated code indicates that the shift fork ‘B’ position sensor is sending incorrect information about the neutral position. This can be caused by sensor misalignment, a faulty sensor, or control module problems. If the sensor incorrectly indicates the neutral position, it can lead to improper gear selection, potentially causing transmission issues.
P2846 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2846: Shift Fork ‘B’ Position Sensor Incorrect Neutral Position Indicated |
| Is it serious? | Yes, incorrect neutral detection can lead to improper gear engagement, potentially causing drivability issues and affecting transmission performance. |
| Possible causes | – Incorrect neutral position from shift fork ‘B’ position sensor – Misalignment or faulty sensor – Control module issues |
| How to diagnose? | – Inspect and test shift fork ‘B’ position sensor for accuracy – Check for sensor alignment and calibration – Verify control module functionality – Replace faulty sensor or components as needed |
P2846 Meaning
The P2846: Shift Fork ‘B’ Position Sensor Incorrect Neutral Position Indicated code means that there is an incorrect reading from the shift fork ‘B’ position sensor regarding the neutral position of the shift fork. This may be caused by a misaligned or faulty sensor, issues with the control module, or problems with the wiring. An incorrect neutral position reading can cause the vehicle to have difficulty selecting the correct gear, which can lead to erratic transmission behavior and decreased performance.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to determine if there are any additional related fault codes. These codes may help to identify if other components of the transmission system are affected. | OBD-II Scanner |
| Inspect Shift Fork ‘B’ Position Sensor | Visually inspect the shift fork ‘B’ position sensor for any physical damage, improper installation, or misalignment. Ensure that the sensor is securely mounted. | Flashlight, Safety Gloves |
| Test Position Sensor for Accuracy | Use a diagnostic tool to check the output of the shift fork ‘B’ position sensor. Verify that the sensor is accurately indicating the neutral position based on manufacturer specifications. | Diagnostic Tool, Multimeter |
| Check Sensor Alignment and Calibration | Inspect the alignment and calibration of the sensor. Ensure that it is properly aligned with shift fork ‘B’ and recalibrate if necessary, as a misaligned sensor can provide incorrect data. | Calibration Tool |
| Inspect Wiring and Connectors | Check the wiring and connectors linked to the shift fork ‘B’ position sensor for any damage, corrosion, or loose connections that could lead to incorrect readings. | Flashlight, Multimeter |
| Verify Control Module Functionality | Use a diagnostic tool to verify that the control module is correctly receiving data from the shift fork ‘B’ position sensor. Check for any errors in the processing of sensor data by the control module. | Diagnostic Tool |
| Replace Faulty Components | Replace any faulty sensors, connectors, or wiring found during diagnostics. Ensure that all replacements are compatible with manufacturer specifications and properly installed. | Replacement Parts, Multimeter |
| Clear the Code and Test Drive | Clear the P2846 code using an OBD-II scanner, and then perform a test drive. Monitor the transmission to ensure that gear engagement and neutral position readings are correct. | OBD-II Scanner |
| Recheck for Codes | After the test drive, re-scan the vehicle to verify that the P2846 code has not returned. If the code reappears, further diagnostics may be needed to determine the root cause of the issue. | OBD-II Scanner |
Free PDF: How to choose OBD2 scanner
I’ve made you a free PDF to choose the OBD2 scanner in 5 minutes.
✅ Which OBD2 scanner is best?
✅ Which type should you get (DIY, Pro, Hobby)
✅ What is the best scanner for the exact brand/feature (e.g best for BMW)
✅ How to get a Bi-Directional tool for as cheap as $40
✅ Discount coupons for scanners
PDF is 100% free and it is designed to help you pick a scanner in less than a few minutes! Not a boring 50-page guide.
Just tell me where to send it.
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)