P0141 on Toyota
O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P0141 on Toyota vehicles indicates o2 sensor heater circuit malfunction (bank 1, sensor 2). Au7o has documented this code across 1 Toyota model — most commonly on Camry. 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 Toyota range from $90 to $250, 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 Toyota by Model
Toyota Camry(1 issue)
- P0606 'Ghost' ECM/PCM Code Disabling VSC/TRAC — Actually a Rear O2 Sensor Heater Fault2006-2012
Camrys of this era commonly set DTC P0606 (ECM/PCM Processor) together with the VSC, TRAC OFF, and check engine lights. Despite the code pointing at the computer, the real cause is almost always a failing downstream (rear) oxygen sensor or its heater circuit confusing the ECM. Many techs have needlessly replaced the ECM. Toyota documents this pattern, and replacing the wrong part wastes hundreds of dollars.
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View P0141 across all makes →Frequently Asked Questions
What does P0141 mean on Toyota?▼
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 Toyota specifically, this code is documented across 1 model.
What causes P0141 on Toyota vehicles?▼
Common causes on Toyota: 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 Toyota?▼
Repair costs on Toyota range from $90 to $250, depending on the specific model and root cause.
Which Toyota models have P0141 documented?▼
Au7o has documented P0141 on 1 Toyota model: Camry.