P0141 means o2 sensor heater circuit malfunction (bank 1, sensor 2). The heater in the downstream O2 sensor (the one that monitors the catalytic converter) has failed. Same story as P0135,
Drive gently and get it diagnosed within days.
The heater in the downstream O2 sensor (the one that monitors the catalytic converter) has failed. Same story as P0135, just the post-cat sensor.
Age-related failure.
Check first.
Corrosion or damage.
Full replacement.
Typically $150–$400
O2 sensor replacement typically $150–$400. Estimates vary by vehicle. Costs are estimates and vary by vehicle, location, and shop.
Safe to drive. The converter monitor can't run properly until fixed — handle before emissions testing.
Typically $150–$400. O2 sensor replacement typically $150–$400. Estimates vary by vehicle.
Drive gently and get it diagnosed within days.
The most common cause is burned-out heater element. Age-related failure.