P2805

Transmission Range Sensor A/B Correlation

Q: Is it safe to drive with P2805?

Not really. A range-sensor mismatch can stop the engine from cranking or let it start in gear, and can force limp mode. Get it diagnosed promptly.

Q: Can I just clear P2805?

It resets as soon as the two sensors disagree again; the sensor adjustment or wiring must be corrected.

Transmission range sensing Generic OBD-II High

What it means

P2805 means the transmission's two range (gear-position) sensors don't agree, so the controller can't confirm which gear is selected. Because the start system and shift strategy depend on this, it can cause a no-start, wrong-gear engagement, or limp mode. It's worth fixing before driving.

High

Can I keep driving? Risky — the transmission may not know what gear it's in, which can cause a no-start, wrong-gear engagement, or limp mode. Fix it before relying on the vehicle.

Real-world scan data

Seen in

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

Check-engine light on
No-crank / no-start in Park or Neutral
Wrong gear engages, or harsh/unexpected shifts
Gear-position (PRNDL) display wrong or blank
Transmission enters limp/failsafe mode

Common causes

Most likely first

Misadjusted or faulty transmission range (park/neutral) sensorLikely
The two range-sensor signals disagreeing due to a wiring open or shortCommon
Corroded or loose connector at the range sensorCommon
Manual shift linkage out of adjustmentLess often
Faulty transmission control module (rare)Less often

How to diagnose & fix

Work through it in order

Scan freeze-frame and compare both range-sensor signals against actual gear position.
Verify the range sensor is correctly adjusted/aligned to the shift detents.
Inspect the sensor connector and wiring for opens, shorts, and corrosion.
Check shift-linkage adjustment.
Replace or realign the range sensor as indicated; clear and confirm a correct gear readout in every position.

FAQ

Quick answers

Is it safe to drive with P2805?+

Not really. A range-sensor mismatch can stop the engine from cranking or let it start in gear, and can force limp mode. Get it diagnosed promptly.

Can I just clear P2805?+

It resets as soon as the two sensors disagree again; the sensor adjustment or wiring must be corrected.

Read & clear P2805 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