P0117 OBD Error Code: Problem & Solutions

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The P0117 fault code can be defined as an engine coolant temperature sensor circuit low input. This would mean that the powertrain control module determined the ECT sensor output going less than 0.14V or above 284-degree F. This is a generic trouble code and it applicable to all the vehicles made since 1996 up to the present. All of us are aware that different vehicle makes and models have their own specifications and troubleshooting methods.

The work of the ECT sensor is to measure the rise and fall of the ECT and would send the critical data to the powertrain control module which would allow the latter to provide better control for a lot of components of emission control systems like the air fuel ratio, ignition spark timing and many more. It can be present in the coolant passage or even in the block.

What causes this problem with the Engine Coolant Temperature Circuit Low Input?

• There can be some faults in the ECT sensor
• The problem of short to ground on ECT signal circuit
• There can be some faults in the connectors
• Wiring harness may get damaged
• Loose terminals at ECT or PCM
• The car engine may get overheated
• There can be some default in the powertrain control module

1. Engine Coolant Temperature Sensor - P0117 error code also relates to problems with the ECT Sensor Find all the ECT Sensor parts with us.
2. Engine Wiring Connector - OBD Error Code P0117 can simply be due to faulty Engine Wiring Connector. Replace old and damage Wiring components now!
3. Powertrain Control Module - OBD Code P0117 can flash if the Powertrain Control Module is damaged. You must replace it with a brand new one online with us.
4. Engine Control Module - Is your ECU perfectly correct, but still seeing P0117 code? Then there is definitely some issue with the Engine Control Module.
5. Air Fuel Ratio - Did your mechanic just found out that there is some fault in the Air Fuel Ratio? Buy top notch Air Fuel Ratio from us at economical prices.
6. Fuel System - Do you remember when was the last time you got your car Fuel System checked up? A dirty Fuel System can cause a lot of issues like displaying P0117 code.

Willing to know some common symptoms of OBD Trouble Code P0117? Your wish is our demand. Have a look at them below:

Common Symptoms

• ECM can start illuminating the check engine light and goes into failsafe mode substituting input to 176° F
• If the engine is cold then it may have a hard start
• The engine might run rough and can also hesitate until the engine warms up
• The engine should run close to normal once the engine warms up

• You must reset the fault codes and a road test should be performed
• Repairing or replacing the ECT connector would be helpful
• The wiring can be replaced or repaired if needed
• The ECT should be replaced with a new sensor

However, if you face any of these issues then you can have a look at our wide range of auto parts. We have stocked a wide range of best priced replacement parts, coolant sensor, engine coolant parts and a lot more to help you out in fixing your car.

• Make sure that you visually inspect the electrical connector, wiring or sensor issues
• The technician should scan and document the codes received and view the freeze frame data to see when the code was set
• Then the next step is to reset the codes to clear the OBD-II fault codes and retest the vehicle to see if the code comes back
• The ECT sensor should be disconnected, then you should observe live data to see if readings go from over 284°F to -40°F
• If readings go to -40° F then replace the ECT sensor if not then look for shorted harness, connector or ECM

 Common Mistakes When Diagnosing The P0117 Code

• The first thing which should be done is a visual inspection
• The manufacturer pinpoint test procedure should be followed step-by-step and make sure that you do not skip any step
• Another important thing to be kept in mind it that you should not replace an ECT sensor unless tests indicate any issue
• Before you install a new ECT sensor, you can try connecting it and viewing the ECM data to see if the temperature output from the sensor is as expected