P055E
Oxygen Sensor Control Module System Voltage
The dedicated O2 sensor control module - found on systems with a wide-band sensor needing its own pumping current driver - reports its supply voltage outside the calibrated window.
The dedicated O2 sensor control module - found on systems with a wide-band sensor needing its own pumping current driver - reports its supply voltage outside the calibrated window.
Common causes
- high
Supply voltage low or unstable
One of the most commonly reported causes for this code — check this first.
Typical part cost: $130-550
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P055E mean?
P055E means "Oxygen Sensor Control Module System Voltage". It is a generic OBD-II code that points to a fault in the vehicle speed, idle control, auxiliary inputs.
What are the most common causes of P055E?
supply voltage low or unstable — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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