Motor Vehicle Expert
OBD transmission fault code guide

P0705 Code Meaning UK

P0705 means “Transmission Range Sensor Circuit Malfunction”. In plain English, the car is not receiving a correct or believable signal telling it which gear position has been selected. This can cause no-start problems, wrong gear display, limp mode, harsh shifting, reverse light faults or gear selection issues.

📅 Updated June 2026 🇬🇧 UK diagnostic guide 🛠 Mechanic-style transmission advice
Quick answer Diagnosis steps Fault Codes Hub
✓ Range sensor explained ✓ UK repair cost guide ✓ Safe driving advice ✓ Heavy internal linking included
Quick answer Meaning Symptoms Causes Can you drive? Repair costs Diagnosis MOT impact Related guides FAQs
Quick answer

What does P0705 mean?

P0705 means the ECU or transmission control module is seeing a problem with the transmission range sensor circuit. The range sensor tells the car whether the selector is in Park, Reverse, Neutral, Drive or another gear position.

If the signal is missing, wrong or inconsistent, the vehicle may not know which gear is selected. This can affect starting, gear changes, reverse lights, dashboard gear display and limp mode behaviour.

Most common area

Transmission range sensor, selector switch, wiring, connector or selector cable adjustment.

Main risk

No-start, wrong gear display, limp mode, harsh shifts or inability to select gears properly.

Best first check

Check live gear-position data and compare it with the actual gear selector position.

Code meaning

P0705 — Transmission range sensor circuit malfunction

The transmission range sensor is sometimes called a gear position sensor, inhibitor switch, neutral safety switch or range selector switch. It helps the vehicle understand the selected gear position.

P0705 is set when the signal from this circuit does not match what the ECU or transmission control module expects. The fault may be electrical, mechanical adjustment-related or caused by communication problems.

Symptoms

Common symptoms of a P0705 code

P0705 can create very noticeable gear selection symptoms, although some cars may only show a warning light at first.

Engine management light

The engine warning light or transmission warning may appear.

Car will not start

If the car cannot confirm Park or Neutral, it may block starting.

Wrong gear display

The dashboard may show the wrong gear or no gear position at all.

Limp mode

The gearbox may limit operation to protect the transmission.

Harsh or delayed shifting

Incorrect range information can affect shift strategy on automatic vehicles.

Reverse light problems

Reverse lights may not work or may come on at the wrong time depending on the fault.

Common causes

What causes P0705?

P0705 can be caused by the range sensor itself, but wiring, adjustment and voltage problems should be checked too.

Sensor

Faulty transmission range sensor

The sensor may fail internally and send an incorrect or missing gear-position signal.

Adjustment

Poor selector cable adjustment

If the selector cable is out of adjustment, the sensor may not line up with the actual gear position.

Electrical

Damaged wiring

Broken, rubbed, corroded or shorted wiring can interrupt the range sensor circuit.

Connector

Corroded connector

Water ingress, corrosion or loose pins can cause intermittent gear-position faults.

Voltage

Low system voltage

Battery or charging issues can cause strange gearbox and module faults.

Module

Transmission control issue

Less commonly, the transmission control module or ECU may not read the range signal correctly.

Safe to drive?

Can you drive with P0705?

It depends on the symptoms. If the car starts, selects gears normally and only has a steady warning light, short careful driving may be possible. But if the car will not start, will not select Drive or Reverse, goes into limp mode, shifts harshly or shows the wrong gear, it should be checked before driving further.

✅ Lower risk: steady warning light only, normal starting and normal gear selection.

⚠️ Medium risk: occasional wrong gear display, intermittent no-start or delayed selection.

🚫 Higher risk: no-start, stuck in gear, limp mode, no reverse, harsh shifting or unsafe gear engagement.

Can You Drive With Engine Light? P0700 Transmission Code
Safety warning

Wrong gear information can be unsafe

The range sensor helps the car know whether it is in Park, Reverse, Neutral or Drive. If that information is wrong, starting, reverse lights and gear engagement can be affected.

If the car moves unexpectedly, selects the wrong gear or will not show the correct gear position, do not continue driving until it has been checked.

Diagnostics Hub Diagnostic App
UK repair costs

Typical UK repair costs for P0705

Costs depend on the vehicle, sensor location, gearbox type and whether the issue is sensor-related, wiring-related or adjustment-related.

Diagnostic scan and live data

Typical range: £50–£130.

Range sensor adjustment

Typical range: £60–£180+.

Transmission range sensor replacement

Typical range: £150–£500+.

Wiring or connector repair

Typical range: £80–£350+.

Selector cable repair or adjustment

Typical range: £80–£350+.

Transmission module diagnosis

Typical range: £100–£300+ before any module repair or coding.

Repair Costs Guide UK
Diagnosis flow

How to diagnose P0705 properly

✅ Scan all engine and transmission control modules.

✅ Record stored, pending and transmission-specific codes.

✅ Check whether P0705 appears with P0700, P0741 or voltage/module faults.

✅ Read live gear-position data on the scan tool.

✅ Move the selector through Park, Reverse, Neutral and Drive and check if live data matches.

✅ Inspect the range sensor connector for water, corrosion or loose pins.

✅ Check wiring near the gearbox for damage or rubbing.

✅ Check selector cable adjustment and linkage condition.

✅ Check battery and charging voltage if multiple module codes are present.

✅ Confirm sensor alignment before replacing the range sensor.

Real experience

What I would check first

On a real P0705 fault, I would start with live data. The scan tool should show the same gear position as the selector. If the live reading is wrong or unstable, I would then inspect the range sensor, connector and linkage adjustment.

If the fault is intermittent, I would check for water ingress and wiring movement around the gearbox. Transmission range sensors and connectors can suffer from heat, oil contamination, road dirt and corrosion.

P0700 Transmission Control P0741 Torque Converter P0562 Voltage Low
MOT impact

Will P0705 fail an MOT?

P0705 itself is not normally what directly fails an MOT. The concern is what the fault causes. If it affects safe gear selection, reverse lights, warning lights, starting, limp mode or driving behaviour, it can become an MOT or safety issue.

⚠️ Higher risk: no reverse, wrong gear selection, unsafe movement, warning lights or limp mode.

⚠️ Medium risk: intermittent no-start, wrong gear display or delayed engagement.

✅ Lower risk: repaired fault, correct gear display and normal selection.

Common MOT Failures Engine Light MOT Guide
Used car buying advice

P0705 on a car you want to buy

If a used car has P0705 stored, check whether it starts reliably in Park and Neutral, whether Reverse lights work, whether the dashboard shows the correct gear and whether the gearbox changes smoothly.

Do not accept “it only needs clearing” if the car has no-start issues, limp mode, harsh shifts or wrong gear display. Transmission faults can become expensive if ignored.

Used Car Buying Guides Inspection Checklist
Frequently asked questions

FAQs about P0705

Common questions about P0705 transmission range sensor circuit faults, safe driving, repair costs and MOT impact.

What does code P0705 mean?

P0705 means the vehicle has detected a problem with the transmission range sensor circuit.

Can I drive with P0705?

Only if the car starts, selects gears normally and does not enter limp mode. No-start, wrong gear display or unsafe gear selection should be checked before driving.

Can P0705 stop a car starting?

Yes. If the car cannot confirm Park or Neutral, it may prevent starting for safety reasons.

Can P0705 be caused by adjustment?

Yes. Poor selector cable adjustment or sensor alignment can cause the range signal to disagree with the selected gear.

Will P0705 fail an MOT?

It can contribute to an MOT or safety issue if it causes warning lights, unsafe gear selection, reverse light faults, limp mode or poor driving behaviour.

Should I replace the range sensor first?

Not before checking live gear-position data, wiring, connector condition, selector cable adjustment and battery voltage.

About this guide

Written for practical UK fault finding

Motor Vehicle Expert explains diagnostic trouble codes in clear, mechanic-style language for UK drivers. This P0705 guide is designed to help you understand transmission range sensor circuit faults, likely causes, safe driving advice, repair costs and MOT implications before replacing parts.

Fault codes should always be treated as a diagnostic starting point. P0705 can involve the range sensor, selector cable adjustment, wiring, connectors, voltage supply, gearbox control modules and live gear-position data, so proper testing is better than guessing.