P0705 on Honda City GM2: Transmission Range Sensor Circuit Malfunction (PRNDL input)

Short answer: P0705 means “Transmission Range Sensor Circuit Malfunction (PRNDL input)”. The car’s computer has found a fault in the AT (gearbox) system and turns on the Check engine light (MIL). First check: read the code with a scanner that can read the gearbox computer.

Standard OBD-II code Same meaning on all cars (SAE J2012). Not checked against this car’s factory manual.

Code

P0705

System

AT (gearbox)

Dashboard light

Check engine light (MIL)

Applies to

Generic OBD-II meaning. Not every code is used by this car.

Confidence

medium (generic OBD-II definition, not checked against the factory manual for this car)

Source

obd-codes.com

Symptoms and when it is set

1. Check engine light on
2. The backup lights may fail to function
3. It may be necessary to move the gearshift lever up and down slightly for a better contact to allow the starter to actuate and start the engine
4. It may be impossible to actuate the starter
5. In some cases, the engine will only start in neutral
6. May start in any gear

Likely causes

1. TRS is loose and mal-adjusted
2. Transmission range sensor is defective
3. Bad connector at the external TRS, either loose, corroded or bent pins
4. Shorted wiring harness on the external sensor as a result of rubbing on the transmission linkage
5. Blockage in the internal valve body TRS port or defective sensor
6. Diagnostic Steps & Possible Solutions
7. Replacement of an internal TRS requires using a Tech II for diagnosis, followed by draining the transmission and removing the pan. The sensor is…

What to check, in order

1. Read the code with a scanner that can read the gearbox computer
2. Check the gearbox fluid level and condition with the correct procedure
3. Check the connector and wiring at the gearbox
4. Have a gearbox specialist confirm before replacing parts

Related on this car

• All fault codes for this car
• Warning lights
• Where the parts are (parts map)
• Common problems

Same code on other cars

• P0705 · Toyota Passo (1st gen)
• P0705 · Toyota Corolla (11th gen, E170)
• P0705 · Toyota Corolla (10th gen, E140)
• P0705 · Honda Civic (10th gen, FC)
• P0705 · Suzuki Wagon R (Pakistan, K10B)
• P0705 on all cars compared

← P0700 P0710 →

Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.