Code result
P0132
O2 Sensor Circuit High Voltage
Moderate severity
What it means
The upstream oxygen sensor signal is fixed at a high voltage, indicating either a continuously rich exhaust on bank 1 or a short to supply voltage in the signal circuit.
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
Genuine rich running (leaking injector, high fuel pressure)
highOne of the most commonly reported causes for this code — check this first.
Signal wire shorted to supply voltage
mediumA plausible cause — test and verify before replacing parts.
Sensor poisoned by silicone or coolant
lowLess common, but worth ruling out after the more likely causes.
Related help
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