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EmissionsMinor✅ DIY Friendly

P0141

O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 2

Heater circuit fault in downstream O2 sensor Bank 1.

SeverityMinor
CategoryEmissions
Est. Repair Cost$100–$300
Code TypePowertrain
DIY RepairYes

⚡ Common Causes

⚠️ Symptoms

✅ How to Fix — Step by Step

  • Step 1:Check heater circuit fuse
  • Step 2:Test sensor heater resistance
  • Step 3:Replace downstream O2 sensor
  • Step 4:Check wiring
💡 Pro Tip: O2 sensor heater faults are common after 100,000 miles — replacement is straightforward.

Repair Cost Estimate

Full Repair Estimate
$100–$300
DIY Possible?
YES
Severity
Minor

Frequently Asked Questions

What does OBD2 code P0141 mean?+
P0141 stands for O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 2. Heater circuit fault in downstream O2 sensor Bank 1.
What causes code P0141?+
Failed heater element; Wiring fault; Blown fuse; ECM driver failure
How do I fix code P0141?+
Check heater circuit fuse; Test sensor heater resistance; Replace downstream O2 sensor; Check wiring
How much does it cost to fix P0141?+
Estimated repair cost for P0141 is $100–$300.
Is P0141 DIY-friendly?+
Yes — P0141 is generally DIY-friendly with basic tools.

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