P0805

Clutch Position Sensor A Circuit

Q: Is it safe to drive with P0805?

Short trips are usually fine, but on automated-manual transmissions the clutch may engage roughly or the gearbox may limp. Have it diagnosed before it worsens.

Q: Can I just clear P0805?

It returns once the sensor or wiring fault reappears. Diagnose the circuit rather than only clearing the code.

Transmission — clutch position sensing Generic OBD-II Medium

What it means

P0805 means the control module has detected a circuit problem with the "A" clutch position sensor. On automated-manual and some clutch-equipped transmissions, this sensor tells the module exactly where the clutch is, so a fault can make engagement rough and shifting imprecise, sometimes forcing a limp mode. It's a sensor-circuit fault affecting the transmission, not the engine's ability to start.

Medium

Can I keep driving? Often driveable, but on automated-manual gearboxes clutch engagement and shifting may be rough or limp — have it checked; it usually won't affect starting.

Real-world scan data

Seen in

220

scans in the past year

Found in

<0.1%

of scans

0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Rough or imprecise clutch engagement
Hard, delayed, or missed shifts
Transmission slipping or dropping into limp mode
Engine revs without matching movement on take-off
Check-engine light on

Common causes

Most likely first

Failed clutch position sensorLikely
Damaged wiring or corroded connector in the sensor circuitCommon
Misadjusted or misaligned sensorCommon
Loose or corroded electrical connectionsLess often
Failed transmission control module (rare)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and view the clutch position value in live data.
Inspect the sensor wiring and connector for damage or corrosion.
Check the sensor's mounting and adjustment against the clutch actuator's range.
Test the sensor's signal through its travel; replace if it reads open, shorted, or stuck.
Clear the code and road-test to confirm smooth engagement returns.

FAQ

Quick answers

Is it safe to drive with P0805?+

Short trips are usually fine, but on automated-manual transmissions the clutch may engage roughly or the gearbox may limp. Have it diagnosed before it worsens.

Can I just clear P0805?+

It returns once the sensor or wiring fault reappears. Diagnose the circuit rather than only clearing the code.

Read & clear P0805 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX