Code result
P0160
O2 Sensor Circuit No Activity Detected
Moderate severity
What it means
The ECU detects no switching or too slow a response from the downstream O2 sensor on bank 2. Often aged or poisoned sensor; downstream sensors usually flat but must respond on diagnostic monitor runs.
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
Sensor aged or poisoned
highOne of the most commonly reported causes for this code — check this first.
Heater circuit weak
mediumA plausible cause — test and verify before replacing parts.
Related help
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