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P1114 is a diagnostic trouble code (DTC) for "Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage/IAT - B Circuit Low Input". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
A P1114 trouble code is related to a low voltage reading from either the engine coolant temperature or intake air temperature sensor that relays temperatures to the engine computer.
P1114 is a OBD-II manufacturer-specific code for a voltage issue with either the engine coolant temperature or intake air temperature sensor in that the signal being sent to the engine computer is lower than the manufacturer’s parameters. A low voltage reading is usually associated with higher than normal engine coolant or air intake temperatures.
The most common causes for a P1114 are:
Some of the symptoms of bad intake air temperature sensors range from a lack of power, trouble with cold starts, and decreased fuel economy. A faulty engine coolant temperature sensor will usually only result in a low or inoperable temperature gauge.
The cause of a P1114 code will not only depend on what the code reads, but what make your vehicle is as they are manufacturer specific. Some codes may point directly at the engine temperature sensor being the fault, requiring your mechanic conducts both a visually inspection and monitor of the signal being sent out by the sensor. Testing for a intake air temperature sensor will be similar.
If any of the sensor readings are not within the manufacturer’s parameters, they will need to be replaced.
Because all P1XXX codes are manufacturer specific, it’s critical to have any code read by a professional-grade OBD-II scanner to ensure you’re fixing the correct problem. This is even more prevalent with P1114 codes as each manufacturer will require different repair techniques. For example, a P1114 code in a General Motors vehicle will read a ECT code, but the IAT sensor will typically be to blame.
Faulty intake air temperature readings can cause a variety of unsavory driving characteristics, making it fairly serious for you to correct a P1114 as quickly as possible. Codes relating to an engine coolant temperature sensor may be even more important as they’ll typically read lower coolant readings than what is actually circulating through the engine.
The most common repairs for a P1114 are as follows:
All P1114 codes can be found on Volkswagen/Audi, Ford, Isuzu, Mazda, Honda/Acura, General Motors, and Ford vehicles.
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