P0114 OBD-II Trouble Code: IAT Sensor Circuit Intermittent Input Problem

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0114 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0114 code

P0114 is a diagnostic trouble code (DTC) for "IAT Sensor Circuit Intermittent Input Problem". 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. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0114 DIAGNOSTIC Get a fair and transparent estimate upfront

P0114 code definition

Intake Air Temperature (IAT) sensor circuit intermittent input problem

What the P0114 code means

P0114 is the OBD-II generic code that the engine control module (ECM) has recorded the IAT sensor input intermittently.

What causes the P0114 code?

The IAT sensor input to the ECM is very erratic or is alternating between shorting and an open circuit.

What are the symptoms of the P0114 code?

  • The ECM turns on the Check Engine Light and goes into a failsafe mode.
  • Intermittent hard starting
  • Fuel mileage varying from good to bad depending on sensor values
  • Exhaust having black smoke out of the tailpipe on acceleration
  • Engine may have pre-ignition and run lean

Note: The symptoms are determined by the manufacturer failsafe ECM strategy for the vehicle during a failure and may vary between manufacturers and vehicles.

How does a mechanic diagnose the P0114 code?

  • Scans the ECM, documents the codes received, and views the freeze frame data to see the conditions present when the code was set

  • Clears the vehicle of fault codes and the retests the vehicle to see if the code comes back

  • Performs a visual inspection to see if there is a disconnected or loose electrical connector to sensor

  • Looks at harness and connector for a short to power

  • Observes the sensor’s live data on the scanner while doing a wiggle test for an open or short circuit in the wiring, connections or sensor

If no problems are noted, the mechanic performs the manufacturer's specific pinpoint tests for the code and repair as needed.

Common mistakes when diagnosing the P0114 code

  • Not performing a visual inspection of connections and wiring

  • Not following the manufacturer pinpoint test procedure step-by-step and skipping steps

  • Not replacing an IAT sensor only when tests indicate a problem

  • Not connecting a new or known good sensor to the harness and viewing the ECM data to see if the temperature output from the sensor is as expected

How serious is the P0114 code?

  • The P0114 code will cause the engine ECM to go into a failsafe mode.

  • The failsafe mode, depending on the manufacturer failsafe mode strategy, may cause erratic drivability symptoms.

  • Driving the vehicle for an extended time with the vehicle in failsafe mode may require additional repairs to remove carbon or repair possible ignition problems.

What repairs can fix the P0114 code?

  • Repairing or replacing the IAT connector to fix shorts or the open circuit caused by corrosion

  • Repairing or replacing the wiring as necessary to fix shorted or open circuits in the harness

  • Replacing the IAT with a new sensor

Additional comments for consideration regarding the P0114 code

  • The P0114 code is often associated with P0111, P0112, and P0112 codes.

  • Most intake air temperature sensor problems for code P0114 are failures from damaged or corroded harness connectors and the sensors failing internally.

Need help with a P0114 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.

P0114
trouble codes
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0114 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,796

Rating Summary
4,411
187
47
28
123
4,411
187
47
28
123

Matthew

31 years of experience
633 reviews
Matthew
31 years of experience
Mercedes-Benz E320 - Check Engine Light is on - Williamsburg, Virginia
MATT WAS AMAZING! HE EXPLAINTED EVERYTHING SO WELL! HIS EXPERTISE AS A MECHANIC IS EVIDENT AND I HIGHLY RECOMMEND HIM.

Mario

18 years of experience
101 reviews
Mario
18 years of experience
Lexus LS430 - Check Engine Light is on - Naples, Florida
NICE GUY, COMPLETED ALL WORK PROFESSIONALLY, HE ACTUALLY OFFERED SUGGESTION AND ATTITUDE WAS THAT HE CARED UNLIKE PAST MECHANIC

Kai

12 years of experience
3 reviews
Kai
12 years of experience
Hyundai Sonata - Check Engine Light is on - Plano, Texas
Great. He was knowledgable and wasted no time getting to work. Had lots of helpful information for me

Patrick

31 years of experience
1038 reviews
Patrick
31 years of experience
Mazda CX-7 - Check Engine Light is on - Austin, Texas
Patrick is always on time and extremely knowledgeable and professional. I am quite picky when it comes to somebody working on my car and I fully trust that Patrick will do an excellent job every time.

More related articles

P0375 OBD-II Trouble Code: Timing Reference High Resolution Signal B Malfunction
P0375 means the high resolution timing reference signals to the PCM have a problem, often due to a faulty camshaft or crankshaft.
P2270 OBD-II Trouble Code: O2 Sensor Signal Stuck Lean Bank 1 Sensor 2
P2270 trouble code definition O2 Sensor Signal Stuck Lean Bank 1 Sensor 2 What the P2270 code means P2270 is an OBD-II...
P0261 OBD-II Trouble Code: Cylinder 1 Injector Circuit Low
P0261 P0261 code definition Cylinder 1 Injector Circuit Low What the P0261 code means This trouble code indicates that the powertrain control module has detected a lower reference voltage coming from the number 1 cylinder’s fuel injector than what was...

Related questions

eva PO597 engined coolant thermostat heater control circuit from obd diagnostic tool

Hi there. For the code P0597 to appear, there is an issue with the engine cooling system. Check the harness to the thermostat housing and a good connection and make sure that there is corrosion. Check for any coolant leaks...

My car won't start and the check engine light and check oil lights are on

The clicking sound can occur when there is not enough battery power getting to the starter to crank the engine. If the cables were corroded, then the battery may be sulfated and need to be replaced. A simple battery check...

2008 Buick Enclave engine light on with code p1682 and car stays running with key off for while then dies, ECM is humming,

Code P1682 sets if the ECM detects a difference in the voltage levels of the two main power inputs to the ECM. Basically, the code will be stored when one voltage input has a significantly different value than the other...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com