Engine-Codes - Pontiac - P2188 PONTIAC

P2188 PONTIAC Code - Fuel Trim System Rich At Idle Bank 1

- Code Popularity: 6,275 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P2188 PONTIAC Code?

  • Dirty Air Filter
  • Dirty Mass Air Flow Sensor (MAF)
  • Leaking fuel pressure regulator
  • Leaking fuel injector
  • Faulty Mass Air Flow Sensor (MAF)

|How to Fix the P2188 PONTIAC Code?

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 P2188 PONTIAC code?

Labor: 1.0

The cost to diagnose the P2188 PONTIAC 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.

|When is the P2188 PONTIAC code detected?

The average long term fuel trim values at idle are less than -30 percent for 10 seconds

|What are P2188 PONTIAC code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P2188 PONTIAC Code Mean?

The engine control module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and emission control. Fuel delivery is controlled differently during Open Loop and Closed Loop. During Open Loop, the ECM determines fuel delivery based on sensor signals without heated oxygen sensor (HO2S) input. During Closed Loop, the ECM adds HO2S inputs to calculate the short and long term fuel trim (FT) adjustments. If the HO2S indicates a lean condition, the fuel trim values will be above 0 percent. If the HO2S indicates a rich condition, the FT values will be below 0 percent. The short term FT values change rapidly in response to the HO2S voltage signals. The long term FT makes coarse adjustments in order to maintain an air/fuel ratio of 14.7:1.

Fuel Trim System Rich At Idle Bank 1

|Need more information with the P2188 PONTIAC code?

Need more information on how to fix the P2188 PONTIAC code?
Get Access to Factory Service Manuals

|Need help with a P2188 PONTIAC code?

Get the P2188 Pontiac code diagnosed by a professional: Find a repair shop in your area