Code result
P0164
O2 Sensor Circuit High Voltage
Moderate severity
What it means
The ECU detects abnormally low voltage from the third O2 sensor on bank 2. Indicates lean exhaust, open sensor or wiring shorted to ground.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Lean exhaust condition
highOne of the most commonly reported causes for this code — check this first.
O2 sensor failed
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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