Having problems with your 2006 Chevrolet Avalanche ?

2006 chev. avalanche,5.3 l . I have codes p0157 and p0449 with no driving issues.help

Posted / edited by AnonymousUser on : 05-04-2021

Answers :

Hi what i get from this is one of the H20 sensors may have messed up this is the code p0157 which translates to H20 circuit low bank 2 sensor 2,try checking the water system arround the radiator, also check the sensore on the engine/motor where there are water sensors.. the other code p0449 is showing EVAP canister vent solenoid control circuit, 1. Inspect the EVAP system for the following conditions:
o Loose, missing, or damaged service port schrader valve
o Loose, incorrect, missing, or damaged fuel fill cap
o A damaged EVAP canister purge valve
2. Raise the vehicle on a hoist.
3. Inspect the EVAP system for the following conditions:
o Disconnected, improperly routed, kinked, or damaged EVAP pipes and hoses
o A damaged EVAP canister vent valve or EVAP canister
(1) EVAP Canister Purge Solenoid
(2) EVAP Canister
(3) Fuel Fill Neck/Fill Cap
(4) Rollover Valve/Fuel Tank Pressure (FTP) Sensor
(5) Fuel Tank
(6) EVAP Canister Vent Solenoid ( this one especially )
(7) Vent Hose/Pipe
(8) EVAP Vapor Pipe
(9) EVAP Purge Pipe
(10) EVAP Service Port
\015\012hope this helps........
Code P0157 - Low circuit voltage - O2 sensor - Bank 2 Sensor 2. \015\012You will have to get your o2 sensor checked and replaced.\015\012----------\015\012
\015\012\015\012code P0449 - evaporator emission control system vent valve solenoid circuit .\015\012You will have to get the solenoid valve checked.Remove the canister and then check the solenoid valve.\015\012Also get the harness Tested between the SV(solenoid valve) and the large bulkhead connector.Check the wiring's.\015\012---------------\015\012Thanks. keep updated for any more query.you can rate this solution\015\012and show your appreciation.
Repair Help & Product Troubleshooting for 2006 Chevrolet Avalanche

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