P0141
O2 Sensor Heater Circuit Bank 1 Sensor 2
2003-2003 Jeep Wrangler 4.0L I6
Low SeverityPowertrainGeneric (SAE)
The 2003 Jeep Wrangler is equipped with a 4.0L inline-6 engine. Below you'll find detailed p0141 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the downstream O2 sensor heater circuit for Bank 1.
Symptoms
- Check Engine Light
- Failed emissions
Common Causes
- Faulty sensor heater
- Blown fuse
- Wiring damage
Diagnostic Steps
- Check fuse
- Test heater resistance
- Inspect wiring
Repair Notes
Replace O2 sensor or repair wiring.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0141 on Other Vehicles
Common Questions
What does code P0141 mean on a 2003-2003 Jeep Wrangler?
P0141 stands for "O2 Sensor Heater Circuit Bank 1 Sensor 2". Malfunction in the downstream O2 sensor heater circuit for Bank 1.
What are the symptoms of P0141 on a Jeep Wrangler?
Common symptoms of P0141 include: Check Engine Light, Failed emissions.
What causes P0141 on a 2003-2003 Jeep Wrangler?
Common causes of P0141 include: Faulty sensor heater, Blown fuse, Wiring damage.
Last updated: March 2026