Lexus Rx400h C3801 Engine Trouble Code
Lexus Rx400h C3801 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.
Lexus Rx400h C3801 Code Meaning :
OBD-II Diagnostic Chassis (C) Trouble Code For Engine
Ignition System Or Misfire
Engine Oil Temperature Sensor Malfunction
Crankshaft Position Sensor A Circuit Malfunction
Exhaust Gas Recirculation Sensor B Circuit High

When you check Lexus Rx400h car engine light came on code C3801 the reason should be . However manufacturer may have a different definition for the C3801 OBD-II Diagnostic Chassis (C) Trouble Code. So you should chech it on our car models.
C3801 OBD-II Diagnostic Chassis (C) Trouble Code Description
C3801 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.Reason For C3801 Code
The reason of C3801 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.C3801 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.
C3800 Previous Engine Trouble Code For Lexus Rx400h | Next Engine Trouble Code For Lexus Rx400h C3802 |