# P1605 on the 2015 Toyota Sequoia

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name P1605

- [10134184](https://open.wenmarpro.com/bulletins/10134184), 2018-04-23: TSB: Some 2012 ? 2015 model year Sequoia and Tundra vehicles with the 3UR\-FBE engine may exhibit a MIL ?ON? condition with Diagnostic Trouble Codes \(DTCs\) P0171/P0174 \(System too Lean Bank 1/Bank 2\), P0172/P0175 \(System too Rich Bank 1/Bank 2\), P1604 \(Startability Malfunction\), and/or P1605 \(Rough Idling\) after attempting to start the engine. Alcohol Density Estimate values may be high even though the vehicle was fueled with regular fuel \(E0/E10\). The Engine Control Module/ECM \(SAE term: Powertrain Control Module/PCM\) logic has been modified to address this condition. Use the following Repair Procedure to reprogram the ECM \(PCM\). ©
- [10132332](https://open.wenmarpro.com/bulletins/10132332), 2018-04-02: TSB: Some 2012 ? 2015 model year Sequoia and Tundra vehicles with the 3UR\-FBE engine may exhibit a MIL ?ON? condition with Diagnostic Trouble Codes \(DTCs\) P0171/P0174 \(System too Lean Bank 1/ Bank 2\), P0172/P0175 \(System too Rich Bank 1/Bank 2\), P1604 \(Startability Malfunction\), and/or P1605 \(Rough Idling\) after attempting to start the engine. Alcohol Density Estimate values may be high even though the vehicle was fueled with regular fuel \(E0/E10\). The Engine Control Module/ECM \(SAE term: Powertrain Control Module/PCM\) logic has been modified to address this condition. Use the following Repair Procedure to reprogram the ECM \(PCM\). ©