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TuningBot DTC Database · v4.37.14

P2190 System Too Rich at Idle Bank 2

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainFuelOBD2

What P2190 means

P2190
System Too Rich at Idle Bank 2 Generic · fuel Data confidence 85%

The control module detected that the air-fuel mixture stayed richer than the target despite full corrective control (System).

Symptoms

  • MIL illuminated
  • Possible rough running or misfire
  • Possible increased fuel consumption

Possible causes

  • Fuel pressure
  • injectors
  • air intake restricted / Wiring
  • short to ground
  • H025
  • ECM / Wiring
  • short to positive
  • short to ground
  • HO2S
  • ECM

Recommended checks

  • Read fuel trim / mixture adaptation values
  • Check injector circuits and compare cylinder balance
  • Check fuel pressure
  • Inspect for intake or exhaust leaks

Related and nearby codes

How to read P2190

P

Powertrain: engine, transmission and driveline systems.

2

Generic SAE-standard code: same meaning on every make.

190

Specific fault index within the subsystem.

Frequently asked questions about P2190

What does P2190 mean?

System Too Rich at Idle Bank 2. The control module detected that the air-fuel mixture stayed richer than the target despite full corrective control (System).

Is P2190 generic or manufacturer-specific?

P2190 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P2190 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningDyno-tested results by model and engine See the results →

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