How many o2 sensors are in a 2008 Toyota Sienna?
There are 4 sensors total.
Where to replace O2 oxygen sensor in Toyota p0051?
With that said, a common fix for this DTC is to replace the air/fuel (O2 oxygen) sensor #1 on bank 2 (the side of the engine that doesn’t contain cylinder #1). Please keep in mind that OEM (original equipment) replacement sensors are recommended (from the dealer).
What causes a p0051 Toyota heater to malfunction?
P0051 TOYOTA Possible Causes Faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 harness is open shorted to ground Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit fuse Faulty Engine Control Module (ECM)
How to fix code p0051 on a Toyota Sienna?
How do I fix code P0051 TOYOTA Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. P0051 TOYOTA Tech Notes There is a service bulletin for some Toyota Models 2004 Toyota Sienna
What does the DTC code p0051 stand for?
Diagnostic trouble code (DTC) P0051 stands for “HO2S Heater Control Circuit Low (Bank 2 Sensor 1).” This code is logged when the powertrain control module (PCM) detects a potential issue with the heater circuit for the oxygen sensor #1 on Bank 2.
With that said, a common fix for this DTC is to replace the air/fuel (O2 oxygen) sensor #1 on bank 2 (the side of the engine that doesn’t contain cylinder #1). Please keep in mind that OEM (original equipment) replacement sensors are recommended (from the dealer).
P0051 TOYOTA Possible Causes Faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 harness is open shorted to ground Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit fuse Faulty Engine Control Module (ECM)
How do I fix code P0051 TOYOTA Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. P0051 TOYOTA Tech Notes There is a service bulletin for some Toyota Models 2004 Toyota Sienna
What causes an OBD code on a Toyota?
Possible causes of OBD code P0051 Toyota. A P0051 Toyota DTC trouble code may be caused by one or more of the following: A short in the heater circuit in the sensor A failed O2 sensor heater Wiring/connectors broken/frayed leading to sensor and/or relay Failed PCM/ECM.