What does P1115 mean on a Ford?

P1115. Intake Air Temperature Sensor 2 Circuit High. Applies to Supercharged and turbocharged Ford models.

What causes P1115 on a Ford?

Open IAT2 signal circuit Unplugged IAT2 connector after intercooler work Failed sensor reading open Broken wire in the IAT2 harness Corroded terminals

How do I fix P1115 on a Ford?

Confirm the connector is seated after any recent front-end work Test circuit continuity end to end Measure sensor resistance Repair opens or terminal damage Replace the sensor if the circuit is intact

Code

P1115

Intake Air Temperature Sensor 2 Circuit High

Category: Powertrain - Fuel/Air Metering
Severity: Check Engine Light
Applies to: Supercharged and turbocharged Ford models
Related: P0113 Intake Air Temperature Circuit High Input on OBD Codes List

Findings, check these first

Open IAT2 signal circuit
Unplugged IAT2 connector after intercooler work
Failed sensor reading open
Broken wire in the IAT2 harness
Corroded terminals

Standard procedure

Confirm the connector is seated after any recent front-end work
Test circuit continuity end to end
Measure sensor resistance
Repair opens or terminal damage
Replace the sensor if the circuit is intact

Code lookup

Type a code above, or start from a symptom or a common code.

Press / to jump to the box. Ford-enhanced powertrain, body, chassis and network codes. Generic P0xxx codes live on OBD Codes List.

Sources and review

Review: qualified. Read the source limits below.

OBDII.pro: P1115 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1115: Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage/IAT - B Circuit High Input
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.

Last updated 2026-09-05.

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