P0141 on 2023 Mercedes-Benz Glc E300e
On a 2023 Mercedes-Benz Glc E300e hybrid, OBD fault codes may still involve the petrol engine side, but diagnosis can also be affected by hybrid operating cycles, intermittent engine use and emissions monitoring patterns that differ from a regular petrol-only car.
P0141 means o2 sensor heater circuit malfunction (bank 1 sensor 2).
Likely causes
- • Faulty sensor
- • Damaged sensor wiring
- • Loose or corroded connector
- • Open circuit or short circuit
- • Poor electrical connection
- • Failed heater element
Symptoms
- • Check engine light illuminated
- • Intermittent warning light
- • Inconsistent engine performance
- • Increased emissions
- • Reduced fuel efficiency
Severity
Low to Medium
Can you keep driving?
Whether you can keep driving depends on how the vehicle is behaving. If there is rough running, loss of power, overheating or stalling, diagnose it as soon as possible.
Fuel and engine specific themes
- • petrol engine emissions monitoring faults
- • intermittent engine-use related readiness issues
- • sensor plausibility warnings during engine transitions
- • airflow and fuel-trim related engine codes
Common fix areas
- • Test the oxygen sensor and heater circuit
- • Inspect exhaust leaks before the sensor
- • Check wiring and connectors
- • Verify live data and sensor voltage
- • Inspect sensor connector and wiring
- • Check continuity, power and ground
FAQs
What does P0141 mean on a 2023 Mercedes-Benz Glc E300e hybrid?
P0141 on a 2023 Mercedes-Benz Glc E300e hybrid indicates o2 sensor heater circuit malfunction (bank 1 sensor 2). The exact root cause can still vary by the powertrain layout and any related stored faults.
Can P0141 behave differently on hybrid vehicles?
Yes. The same code can present differently depending on whether the vehicle is petrol, diesel, hybrid or another powertrain type, because emissions control, fuelling strategy and operating conditions are not the same.
Should I diagnose P0141 differently on this hybrid model?
You should still start with the standard fault-code process, but you should also consider fuel-type-specific systems and operating behaviour when diagnosing the cause.