P0141 code meaning
O2 Sensor Heater Circuit Bank 1 Sensor 2
Powertrain system Generic code P01xx codes Check engine light
What P0141 means
The downstream oxygen sensor on bank 1 (sensor 2) has an electric heater so it reaches its working temperature quickly. The control module switches the heater on the ground side and checks both the driver voltage against the commanded state and the heater current. GM fails it outside 0.3–2.5 A (two trips; pure circuit faults are P0036–P0038 there); Ford uses P0141 as its general heater circuit code with a current window of roughly 0.22–0.465 A minimum to 3 A maximum depending on sensor supplier. Without heat the sensor signal is useless, so converter monitoring and trim are suspended.
P0141 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairAfter a drive cycle
Symptoms of P0141
- Check engine light on (usually after two drive cycles)
- Catalyst monitor readiness not set
- Follow-up codes P0140/P0136 possible
Common causes of P0141
- Most likelyHeater element in the sensor burnt out (replace sensor)
- PossibleHeater supply (fuse, relay) or control wire open
- PossibleShort in the heater (current too high)
- Less likelyConnector corroded, contact resistance
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Oxygen sensor heater bank1 sensor2Oxygen sensor heater circuitFuses
What each part of P0141 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 1 | Area: fuel and air metering. |
| 41 | The exact fault in that area. |
What to do next
- Note P0141 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0141
What does P0141 mean?
P0141 means "O2 Sensor Heater Circuit Bank 1 Sensor 2". The downstream oxygen sensor on bank 1 (sensor 2) has an electric heater so it reaches its working temperature quickly. It is a generic code, so it means the same on every make.
Is it safe to drive with P0141?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P0141 fail an emissions test?
Yes, it can. P0141 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0141 to fix?
Difficulty: easy. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P0141 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.