P2195: O2 Sensor Signal Biased/Stuck Lean (Bank 1, Sensor 1)
What this check-engine code means in plain English, what usually causes it, and what a fix typically costs.
What P2195 means
The engine computer has detected that the upstream oxygen sensor (before the catalytic converter) on Bank 1 is consistently reading a lean air-fuel mixture. This means the sensor is reporting too much oxygen in the exhaust, which can indicate an actual lean condition or a sensor problem.
What causes P2195?
Is P2195 safe to drive?
You can typically continue driving for a short period, but a lean condition can cause poor performance, reduced fuel economy, and potential engine damage if left unaddressed for extended periods. Address the issue within a few days to avoid catalytic converter damage from prolonged lean operation.
P2195 repair cost
Industry-average estimates. Cost depends on whether it's a simple vacuum leak repair or requires oxygen sensor replacement, fuel system service, or multiple diagnostic steps.
Which one is it for your car?
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