P2189 - System Too Lean At Idle Bank 2

Repair Importance Level: 3/3

Repair Difficulty Level: 3/3

Comments | Add Comment

Possible causes

Intake air leaks

Faulty front heated oxygen sensor

Ignition misfiring

Faulty fuel injectors

Incorrect fuel pressure

Lack of fuel

Faulty Mass Air Flow (MAF) sensor

Incorrect Positive Crankcase Ventilation (PCV) hose connection

What does this mean?

Possible symptoms

Engine Light ON (or Service Engine Soon Warning Light)

Hard to start engine when cold

P2189 Description

In order to provide the best possible combination of drivability, fuel economy and emission control, the Powertrain Control Module (PCM) uses a closed loop air/fuel metering system. The PCM monitors the HO2S signal voltage and adjusts fuel delivery based it in closed loop fuel control. Changes in fuel delivery will be indicated by the long-term and the short-term fuel trim values. The ideal fuel trim value is around 0%. The PCM will add fuel when the HO2S signal is indicating a lean condition. Additional fuel is indicated by fuel trim values that are above 0%. The PCM will reduce fuel when the HO2S signal is indicating a rich condition. Reduction in fuel is indicated by fuel trim values that are below 0%. The DTC relevant to fuel trim will be set when the amount reaches excessive levels because of a lean or rich condition.

OBDII Code P2189 - System Too Lean At Idle Bank 2 - Autoodes.com

P2189 Information for specific makes

P2189 AUDI System Too Lean At Idle Bank 2

P2189 BMW System Too Lean At Idle Bank 2

P2189 DODGE System Too Lean At Idle Bank 2

P2189 HYUNDAI System Too Lean At Idle Bank 2

P2189 KIA System Too Lean At Idle Bank 2

P2189 MAZDA System Too Lean At Idle Bank 2

P2189 MINI System Too Lean At Idle Bank 2

P2189 VOLKSWAGEN System Too Lean At Idle Bank 2

Need more help?

Do you need more help with the P2189 code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code

Ask a Question

Find a Shop

Related Information

P2189 Comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P2189 code? Have you replaced any parts?
Any information is appreciated. Thanks