P3191 Toyota Prius

Code P3191 Description The diagnostic trouble code P3191 indicates that the engine is not starting properly. This code is specific to hybrid vehicles, particularly Toyota and Lexus models. When this code is triggered, it means that there is a malfunction in the engine control module (ECM) communication circuit.

Toyota P3191 code: Hybrid Inverter Cooling System Performance. Check coolant level, inspect cooling system components, and clear code. Steps to fix are listed inside.

Prius 2010 Error Code P3191 Discussion in ' Gen 3 Prius Care, Maintenance & Troubleshooting ' started by Christian_cool, Jan 22, 2015. Repair Information for P3191 Toyota code. Learn what Engine Does Not Start means, location and how to repair.

P3191 Code, Mass Airflow Sensor Replacement 2 reading Jump to Latest 54K views 4 replies 2 participants last post by Phoenix May 11, 2012. 2001-2009 Prius P3191, P3190, P0A0F - quick checks for Toyota Prius MIL repair If you just had your oil changed and are having issues with a dying or misfiring Prius, read this. Learn how to diagnose and fix the P3191 error code in your Toyota Prius with expert tips.

P3191: Uncovering The Symptoms Of This Auto Fault Code P3191 is a fault code that indicates a problem with the hybrid battery system. When this code appears, the engine light or service engine soon warning light will turn on. This fault code is commonly found in hybrid vehicles, such as the Toyota Prius.

Vehicle: 2002 Prius Model: N/A P3191 - my first guess is water in the gas, somehow. Usually it's a cracked/corroded fuel fill neck pipe (Toyota part 77201-47051) but could be a bad batch of gas. The solution is a bottle of DryGas into the tank, wait 24 hours, then drive (as best you can) to get the fuel level low, then put in clean.

Make: Toyota Code: P3191 Definition: Engine does not Start Description: Monitor runs whenever following DTCs are not present: None Fuel cut operation: Not operated Engine speed: 650 rpm or more (varies with engine coolant temperature) Communication with hybrid vehicle control control ECU: No malfunction Cause: Intake system Throttle body assembly Fuel pressure Engine Mass air flow meter sub.