Engine-Codes - Honda - P1129 2008 HONDA ACCORD

P1129 2008 HONDA ACCORD - Manifold Absolute Pressure Sensor Circuit Higher Than Expected

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1129 2008 HONDA ACCORD Possible Causes

  • Faulty Manifold Absolute Pressure Sensor
  • Manifold Absolute Pressure Sensor harness is open or shorted
  • Manifold Absolute Pressure Sensor circuit poor electrical connection

How is the P1129 2008 HONDA ACCORD code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P1129 2008 HONDA ACCORD code

Labor: 1.0

The cost to diagnose the P1129 2008 HONDA ACCORD code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
How much do you know about cars?

Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

Play Now

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine hard to start
  • Rough or erratic idle speed

P1129 2008 HONDA ACCORD Meaning

The Manifold Αbsolute Pressure (MΑP) sensor generates a signal that is proportional to the amount of vacuum in the intake manifold. The signal is sent to the Engine Control Mudule (ECM) and the information is used to control the air/fuel mixture ratio. Faulty MΑP sensor can cuase the engine to stall, surge or a rough idle.

More Information

Need more information on how to fix the P1129 2008 HONDA ACCORD code?
Get Access to Factory Service Manuals

Need more help?

Get the P1129 2008 Honda Accord code diagnosed by a professional: Find a repair shop in your area