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Back to Previous Page When should an Oxygen (O2) sensor be replaced? - ALL
An Oxygen (O2) sensor should be replaced if a check-engine light appears and diagnostic trouble codes related to fuel-trim or sensor performance are stored, or if symptoms such as poor fuel economy, failed emissions tests, rough idle, or sluggish acceleration occur. Sensors contaminated by oil, coolant, fuel additives, or physical damage should also be replaced to restore accurate air-fuel-ratio control.
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Solving a vehicle with a rough running engine and a check engine light on
We’ll take a look at a vehicle that has a rough-running engine, check engine light on and intermittent shut-off at idle by utilizing a Bosch ADS 525X or ADS 625X Diagnostic Scan Tool and Bosch Double Iridium Spark Plugs. See how #BoschSolves real-world problems technicians see in their shop every day.