P2845
Shift Fork A Position Sensor Incorrect Neutral Position Indicated
Automated transmission actuator
Generic OBD-II
Medium
What it means
P2845 means the shift-fork A position sensor is reporting the wrong neutral position — the controller can't confirm the fork is truly in neutral. On automated and dual-clutch transmissions this can prevent clean gear engagement and force limp mode. The engine starts, but the car may not drive properly.
Medium
Can I keep driving? Reduced — the transmission may not engage a gear from neutral or may misjudge gear position, causing failure to move or limp mode.
Common symptoms
What you'll notice
- Check-engine light on
- Transmission won't engage a gear, or stays in neutral
- Harsh or failed shifts
- Transmission in limp/failsafe mode
Common causes
Most likely first
- Misadjusted or faulty shift-fork A position sensorLikely
- Shift-fork A not reaching true neutral (mechanical bind or actuator fault)Common
- Corroded or loose sensor connector/wiringCommon
- Low or contaminated transmission fluidLess often
- Faulty transmission control module (rare)Less often
How to diagnose & fix
Work through it in order
- Scan freeze-frame and related shift-fork codes (P2831, P2846, P2851).
- Verify the fork A position sensor reads true neutral when commanded; check adjustment / basic settings.
- Inspect the sensor wiring and connector.
- Check fluid level and condition and confirm actuator operation.
- Repair or replace the sensor and re-run any adaptation; clear and confirm neutral/gear engagement.
FAQ
Quick answers
Is it safe to drive with P2845?+
Only to get it diagnosed. If the controller can't confirm neutral, it may block gear engagement, which can leave the car unable to move.
Can I just clear P2845?+
It returns once the sensor again reports the wrong neutral position; the sensor or actuator must be corrected.
Related codes
Often seen with P2845
Read & clear P2845 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX