AutoCodes – Jeep – P1193 Jeep

P1193 Jeep Code - Inlet Air Temperature Sensor Circuit High Condition

Quick Answer

The Inlet Air Temperature (IAT) Sensor is a 2-wire thermistor, as intake air temperature increases, thermistor resistance, and signal voltage decrease. Common causes include Faulty Inlet Air Temperature (IAT) Sensor, Inlet Air Temperature Sensor harness is open or shorted, Inlet Air Temperature Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1193 Jeep indicates Inlet Air Temperature Sensor Circuit High Condition.
Common causes: Common causes include Faulty Inlet Air Temperature (IAT) Sensor, Inlet Air Temperature Sensor harness is open or shorted, Inlet Air Temperature Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 3,237

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1193 Jeep Description

The Inlet Air Temperature (IAT) Sensor is a 2-wire thermistor, as intake air temperature increases, thermistor resistance, and signal voltage decrease. Cold Engine, voltage is sent through a high resistance circuit in Powertrain Control Module (PCM). Warm Engine, voltage is sent through a low resistance circuit in PCM. PCM dual circuit improves IAT accuracy overall temp ranges. PCM monitors IAT voltage to help determine air density, due to temperature, for fuel calculations. The circuit is monitored when the engine is running. Diagnostic Trouble Code (DTC) will set when Inlet Air Temperature (IAT) sensor voltage is more than 4.9 volts.

OBDII Code P1193 Jeep - Inlet Air Temperature Sensor Circuit High Condition - AutoCodes.com — P1193 Jeep Code - Inlet Air Temperature Sensor Circuit High Condition

What does this mean?

What are the Possible Causes of the DTC P1193 Jeep?

Faulty Inlet Air Temperature (IAT) Sensor
Inlet Air Temperature Sensor harness is open or shorted
Inlet Air Temperature Sensor circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1193 Jeep?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1193 Jeep code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.