P0117 on Honda City GM2: Engine Coolant Temperature Sensor Circuit Low Input

Short answer: P0117 means “Engine Coolant Temperature Sensor Circuit Low Input”. The car’s computer has found a fault in the Engine system and turns on the Check engine light (MIL). First check: read the code and freeze-frame data with an OBD-II scanner.

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

Code

P0117

System

Engine

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. Potential symptoms include
3. Poor fuel economy
4. Poor drivability
5. Engine may run rough or blow black smoke out the tailpipe
6. May not idle

Likely causes

1. Potential causes of the P0117 code include
2. Bad
3. ECT sensor
4. Short to ground on ECT signal circuit
5. Faulty or damaged connectors
6. Wiring harness damaged
7. Loose terminals at ECT or PCM

What to check, in order

1. Read the code and freeze-frame data with an OBD-II scanner
2. Check the connector and wiring of the part named in the code
3. Test the part with scanner live data or a multimeter, using the values in the repair manual
4. Fix the cause, clear the code and test-drive

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

• P0117 · Toyota Passo (1st gen)
• P0117 · Toyota Corolla (11th gen, E170)
• P0117 · Toyota Corolla (10th gen, E140)
• P0117 · Honda Civic (10th gen, FC)
• P0117 · Suzuki Wagon R (Pakistan, K10B)
• P0117 on all cars compared

← P0116 P0118 →

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.