Is it safe to drive with a P0141 code?

Severity is low. Address P0141 sooner rather than later — driving with an active check engine light can worsen the problem or void emissions warranties.

How much does it cost to fix P0141?

Repair costs for P0141 typically range from $40 to $300 in the US, depending on the underlying cause. The most common fix is: Failed downstream O2 sensor heater.

What are the symptoms of P0141?

Check engine light. Emissions test failure. No drivability issue typically.

Check Engine Code

P0141

O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)

Severity: low DIY difficulty: 2/5 Typical cost: $40–$300

Last updated April 30, 2026

What P0141 means

Same heater circuit issue as P0135, but on the downstream (post-cat) sensor. The downstream sensor monitors catalyst efficiency; a failed heater slows readiness monitors.

Symptoms

Check engine light
Emissions test failure
No drivability issue typically

Likely causes (most common first)

Failed downstream O2 sensor heater
Blown heater fuse
Damaged wiring near the exhaust
Corroded connector

Can I keep driving?

Low — mostly emissions/economy

Typical repair cost

DIY fixes can start near $40 (parts only). Shop repairs for P0141 typically run up to $300 depending on the underlying cause and vehicle. Start with the most common cause — Failed downstream O2 sensor heater — before throwing parts at it.