AutoCodes – Jeep – P0129 Jeep

P0129 Jeep Code - Barometric Pressure Out Of Range Low

Quick Answer

The Engine Control Module (ECM) has detected an out of range signal from the Manifold Absolute Pressure (MAP) sensor Common causes include Faulty Manifold Absolute Pressure (MAP) sensor, Manifold Absolute Pressure (MAP) sensor harness open or shorted, Manifold Absolute Pressure (MAP) 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: P0129 Jeep indicates Barometric Pressure Out Of Range Low.
Common causes: Common causes include Faulty Manifold Absolute Pressure (MAP) sensor, Manifold Absolute Pressure (MAP) sensor harness open or shorted, Manifold Absolute Pressure (MAP) 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 25,890

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0129 Jeep Description

The Engine Control Module (ECM) has detected an out of range signal from the Manifold Absolute Pressure (MAP) sensor

OBDII Code P0129 Jeep - Barometric Pressure Out Of Range Low - AutoCodes.com — P0129 Jeep Code - Barometric Pressure Out Of Range Low

What does this mean?

What are the Possible Causes of the DTC P0129 Jeep?

Faulty Manifold Absolute Pressure (MAP) sensor
Manifold Absolute Pressure (MAP) sensor harness open or shorted
Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection

How to Fix the DTC P0129 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 P0129 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.