P0141 on Ford
O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P0141 on Ford vehicles indicates o2 sensor heater circuit malfunction (bank 1, sensor 2). Au7o has documented this code across 1 Ford model — most commonly on EcoSport. This code means the Engine Control Module detected a problem in the heater circuit of the oxygen sensor located on Bank 1, Sensor 2 — the downstream O2 sensor after the catalytic converter on the bank containing cylinder 1. This sensor has a built-in heating element that brings it up to operating temperature quickly so it can read exhaust accurately. P0141 sets when the computer sees abnormal current or voltage in that heater circuit (open, shorted, or out of range). It is mainly an emissions/monitoring fault and usually doesn't affect how the car drives. Typical repair costs on Ford range from $150 to $800, depending on the specific model and root cause.
Common Causes of P0141
- •Failed oxygen sensor heater element (internal to the sensor)
- •Blown fuse feeding the O2 sensor heater
- •Open, shorted, or corroded heater circuit wiring
- •Corroded or loose O2 sensor connector
- •Poor ground or power feed to the heater circuit
- •Exhaust heat damage to the sensor or harness
- •Faulty ECM/PCM heater driver
P0141 on Ford by Model
Ford EcoSport(1 issue)
- Exhaust Flex Pipe Cracking and Exhaust Leak2018-2022
The Ford EcoSport is known for premature exhaust flex pipe failure, where the flexible coupling between the exhaust manifold and the catalytic converter develops cracks and leaks. The flex pipe deteriorates from thermal cycling and vibration, causing a loud exhaust ticking or hissing noise that is most noticeable at startup and during acceleration. The leak can also trigger oxygen sensor codes and cause the check engine light to illuminate. In areas with road salt, corrosion accelerates the failure.
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What does P0141 mean on Ford?▼
P0141 stands for "O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)." This code means the Engine Control Module detected a problem in the heater circuit of the oxygen sensor located on Bank 1, Sensor 2 — the downstream O2 sensor after the catalytic converter on the bank containing cylinder 1. This sensor has a built-in heating element that brings it up to operating temperature quickly so it can read exhaust accurately. P0141 sets when the computer sees abnormal current or voltage in that heater circuit (open, shorted, or out of range). It is mainly an emissions/monitoring fault and usually doesn't affect how the car drives. On Ford specifically, this code is documented across 1 model.
What causes P0141 on Ford vehicles?▼
Common causes on Ford: Failed oxygen sensor heater element (internal to the sensor), Blown fuse feeding the O2 sensor heater, Open, shorted, or corroded heater circuit wiring, Corroded or loose O2 sensor connector, Poor ground or power feed to the heater circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0141 on a Ford?▼
Repair costs on Ford range from $150 to $800, depending on the specific model and root cause.
Which Ford models have P0141 documented?▼
Au7o has documented P0141 on 1 Ford model: EcoSport.