Question about 1999 Dodge Avenger

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Code p0117 what causes it

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Here's a link to your code.

Posted on May 05, 2013


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Engine code p0117 on 2007 dodge charger

P0117 - Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

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I have a code P0108 & P0117 on a 2001 Honda accord

Find out what sensors the codes refer to and replace them.

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Drtc p0117

overheating will cause this po code. if never overheated then you will need to test e.c.t. sensor resistance as well as key on voltage.

Aug 31, 2012 | 1998 Plymouth Breeze

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2001 300m overheating and leaking water got code po117

P0117 Engine Coolant Temperature Circuit Low Input,,,Code P0117 indicates a low voltage input from the Coolant Temperature Sensor to the PCM. don't assume that the sensor is bad in this case, often it can be as simple as Rusty and/or corroded Engine Coolant, also check the connections to be sure they are tight, if these check out, then and only then,, you'll have to change the sensor

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2004 sebring 2.4 x engine running rough black ritch exhaust no power code po138 po117 now wont start flooded bad just kicks

The code description for Diagnostic Trouble Code (DTC) P0138 is "Oxygen Sensor Bank 1 Sensor 2 shorted to voltage" The oxygen sensor (O2S) voltage should always be between 0 and 1 volt. This code sets when the O2S voltage is greater than 1.2 volts for at least 30 seconds.

The code description for code P0117 is "Engine Coolant Temperature Sensor (ECT)Voltage Low". The ECT is a thermal variable resistor. The Powertrain Control Module (PCM) sends a 5 volt reference to the ECT and measures how much of this voltage returns to the PCM to determine engine temperature. This code sets when the ECT voltage signal is less than 1 volt.

Here's the kicker...which came first, P0117 or P0138? Low ECT voltage can cause the engine to run extremely rich and cause the O2S voltage to go high. This needs to be looked at with a scanner that can display the actual ECT and O2S voltages so they can be compared.

I would say that with the symptoms you are describing along with these codes, there is a GOOD chance that you have some kind of wiring harness damage or water in a connector that is shorting these two circuits together. This would definitely RAISE the voltage on the O2S circuit that is supposed to be low, and LOWER the ECT voltage that is supposed to be high.

May 19, 2011 | 2004 Chrysler Sebring

1 Answer

My friends car came up with this code and p0117 and he says when he accelerates it feels like its holding back

The P0117 code would not effect the acceleration of the vehicle. Probably just need a good tune up unless there are other codes showing in the system.

P0117 - Engine Coolant Temperature Circuit Low Input. The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

- Harness or connectors (The sensor circuit is open or shorted.)
- Engine coolant temperature sensor may be faulty
- Low engine coolant level.

- Replaced coolant temperature sensor
- Repair connector or harness

Jan 17, 2011 | Mitsubishi Eclipse Cars & Trucks

1 Answer

2004 vw beetle code p0117 how to fix

P0117 Engine Coolant Temp Sensor Circuit Low Input

ECM detects short circuit in wiring or engine coolant temp sensor (G62)

Feb 22, 2010 | 1998 Volkswagen Jetta

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For ''what does obd2 code p0117 on my 2000 crown victoria means''

P0117-Engine Coolant Temperature Circuit Low

Possible Causes:

ECT sensor signal circuit is grounded in the wiring harness ECT sensor is damaged or the PCM has failed

Nov 12, 2009 | 2000 Ford Crown Victoria

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I have a 96 eclipse and the check engine and battery light are on, the code it throws is p1493 and p0117 what is wrong with it?

P1493 Battery Temp. Sensor, Low Voltage
P0117 ECT Sensor, Low voltage

Make sure the engine is reaching operating temperature, U may have a problem w/the thermostat, this is code P0117

Have the battery and the Alternator tested for possiable charging system issue, this is code P1493

Oct 14, 2008 | Mitsubishi Eclipse Cars & Trucks

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