[SOLVED] Dodge P0129 Code: Low Barometric Pressure Quick Fix

The OBD code P0129 for Dodge indicates an issue with the Manifold Absolute Pressure (MAP) sensor circuit.

Symptoms include the Engine Light being ON.

This code is commonly caused by a faulty MAP sensor or related wiring issues.

While not a severe problem, it can affect engine performance.

To fix it, inspect the MAP sensor, wiring harness, and connectors for any damage or poor connections.

Repair Importance Level	10.0 (Out of 10)
Estimated Repair Time	Approximately 1.0 hour
Repair Difficulty Level	6.67 (Out of 10)

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Symptoms of the Dodge p0129 OBD Code

The vehicle may experience reduced engine power and poor fuel economy with fault code P0129.

Symptoms: Engine Light ON.
Reduced engine power.
Poor acceleration.
Engine may stall.

Causes of the Dodge p0129 OBD Code

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P0129 in Dodge indicates a potential issue with the barometric pressure sensor circuit.

P0129 can be caused by a faulty Manifold Absolute Pressure (MAP) sensor.
A Manifold Absolute Pressure (MAP) sensor harness open or shorted.
A Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection.

Fixing Dodge Error Code p0129 Step By Step

Address the issue by inspecting the thermostat operation and replacing it if necessary.

To fix the Dodge OBDII code P0129, start by reviewing the possible causes mentioned above and visually examining the corresponding wiring harness and connectors.
Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
Test the operation of the thermostat to ensure it is functioning correctly.
Replace the thermostat if it is found to be faulty.
Clear the fault code from the vehicle’s computer using a scan tool.
Test drive the vehicle to verify that the code does not return, indicating a successful repair.

Cost Of Fixing Dodge p0129 Fault Code

Diagnosing and repairing Dodge code P0129 involves testing and potentially replacing the barometric pressure sensor.

The cost to diagnose and fix the Dodge OBD code P0129 depends on the estimated 1. 0hour repair time.

Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150. Factors like shop rates and the complexity of the repair can influence the final cost.

Details of the Dodge p0129 OBD Code

Dodge fault code P0129 indicates a barometric pressure too low for the engine operating conditions.

Dodge OBD code P0129 means Barometric Pressure Too Low.

This code is triggered by the Engine Control Module (ECM) when it detects that the barometric pressure is below the expected range.

The barometric pressure sensor is the component that triggers this fault code.

The barometric pressure sensor is part of the vehicle’s engine management system and helps the ECM adjust fuel delivery and ignition timing based on atmospheric pressure.

Mechanic’s Tech Notes

Code P0129 indicates that the barometric pressure is below the expected range.

To diagnose and fix OBDII code P0129 on a Dodge, start by checking the transmission control module (TCM) power and ground using a multimeter.

Use a scan tool to confirm if the TCM communicates over the Controller Area Network (CAN) network.

If the TCM does not respond, reprogramming or reflashing may be necessary.

Additionally, inspect the wiring harness and connectors for any damage, and check connector pins for signs of being broken, bent, pushed out, or corroded.

This thorough examination will help identify and address the root cause of the P0129 code.

FAQ

1. What are the common symptoms associated with OBD code P0129 in a Dodge vehicle?

Common symptoms of OBD code P0129 in a Dodge vehicle include Engine Light ON and possible causes are a faulty MAP sensor or related wiring issues. Fix: Inspect and repair as needed.

2. What is the typical cause of OBD code P0129 in a Dodge vehicle?

OBD code P0129 in a Dodge is typically caused by a faulty MAP sensor, open/shorted harness, or poor electrical connection. Inspect and repair as needed.

3. How can I diagnose and fix OBD code P0129 in my Dodge vehicle?

Diagnose and fix OBD code P0129 in your Dodge by checking the MAP sensor, harness, and connections for faults. Inspect wiring for damage or corrosion.

Wrap Up

If your Dodge is displaying OBD code P0129, you may experience poor engine performance, reduced fuel efficiency, or even stalling.

This code typically indicates an issue with the barometric pressure sensor circuit, such as a faulty sensor, wiring problem, or low engine oil level.

To address Dodge OBD code P0129, start by checking the barometric pressure sensor and its wiring for any damage or corrosion.

Test the sensor’s resistance and ensure proper voltage supply.

If necessary, replace the sensor and repair any damaged wiring to resolve the issue effectively.