- Vehicles
- Cars
P0113
P0113 (generic OBD-II): intake air temperature sensor 1 circuit high
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
The engine computer reads too high a voltage on the intake air temperature sensor, as if the circuit were open. Check, without touching it, that its connector is seated and save the codes.
Safety first
Stop and check this first
- A false air temperature reading can upset the mixture and cold starting; do not leave it unchecked even if the car seems to run well.
Safe checks you can perform
- Connector after a filter change
- Air temperature reading on the reader
Leave these tasks to a qualified professional
- Do not attempt this professional task: Sensor circuit measurement
- Do not attempt this professional task: Reading check after the repair
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Sensor circuit measurement
What they doThe technician measures wiring continuity and the air temperature sensor resistance, and inspects the connector.
They must show youthe sensor resistance against specification and the wiring continuity.
In writingwhether the wire is repaired or the sensor replaced (or the airflow meter if it is built in) and why.
Reading check after the repair
What they doAfter the repair, the technician confirms the intake temperature reading matches the outside temperature and no code is pending.
They must show youthe temperature read after the repair.
In writingthe final reading and that no code is pending.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Connector after a filter change
- Who:
- you, with the engine off.
- How:
- if the air filter was changed recently, check without unplugging anything that the intake sensor connectors are seated.
- Result that matters:
- whether a connector was left loose after the work.
- If you see a loose connector:
- tell the workshop, it is the simplest cause to check.
- If they are seated:
- the circuit needs measuring.
- Evidence to keep:
- a photo of the connectors and the date of the last filter change.
Do not probe or unplug connectors: electrical measurement is for the workshop.
Evidence: Ford 2020-2023 gasoline OBD system operation
Air temperature reading on the reader
- Who:
- you, with a generic OBD-II reader and a cold engine.
- How:
- read the codes, save the freeze frame and, if the reader shows live data, compare the intake air temperature with the outside temperature on a cold engine.
- Result that matters:
- whether the reading is absurd (far below outside temperature) or plausible.
- If the reading is absurdly low:
- it confirms the computer sees an open circuit; the workshop should measure the wiring.
- If the reading is plausible now:
- the fault is intermittent; tell the workshop so it checks the connector and wire while moving them.
- Evidence to keep:
- a capture of the temperature read and the approximate outside temperature.
Plug in and read the tool with the car parked somewhere safe, never while driving. Do not clear the codes: clearing them also erases the freeze frame data the workshop needs.
Evidence: Ford 2020-2023 gasoline OBD system operation · Title 13, California Code Regulations, Section 1968.2, Malfunction and Diagnostic System Requirements (OBD II)
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Vehicles
- Brand
- OBD-II genérico
- Product type
- Cars
Known code variants
- P0113
- P0113 intake air temperature sensor
- P0113 OBD2
- P0113 sensor temperatura aire admisión
What it means
P0113 is the generic code for intake air temperature sensor 1 circuit high. In Ford's documentation, the computer continuously watches that sensor's voltage and sets P0113 when it stays above its upper limit for a few seconds. A high voltage usually means an open circuit: a loose connector, a broken wire, a corroded pin or an open sensor. In many cars the sensor is built into the airflow meter, so the code is not enough to decide which part to replace.
Warnings and stop conditions
- Loweditorial warning
A false air temperature reading can upset the mixture and cold starting; do not leave it unchecked even if the car seems to run well.
Evidence: Ford 2020-2023 gasoline OBD system operation
Symptoms and causes
Probable causes · in order
- Loose connector or open circuitPossible
An unseated connector or a broken wire leaves the signal high. Suspect it after work on the intake or the filter.
Evidence: Ford 2020-2023 gasoline OBD system operation
- Open sensorPossible
If the circuit is intact, the sensor itself may be open. It is confirmed by measuring its resistance against specification.
Evidence: Ford 2020-2023 gasoline OBD system operation
Virtual technician
Does P0113 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Ford 2020-2023 gasoline OBD system operation
Ford Motor Company · 2023 · manual
- 2
California Air Resources Board · 2006 · official_doc
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