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Check engine light · Engine codes

P0135: O2 Sensor Heater Circuit (Bank 1 Sensor 1)

Powertrain · GenericP0135
Drive on, get it checked
What it means

The upstream O2 sensor's heater isn't working.

How serious

Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.

Where a shop starts

Failed O2 sensor. Then: blown fuse; wiring fault.

Owners named P0135 in 10 complaints to the U.S. government, most often on the Chevrolet Volt.

Cars owners report it on

Complaints that name P0135, by model. Raw counts, not a failure rate: popular models get more complaints.

Years owners report it on most: 2017 Chevrolet Volt

The details

What P0135 means

The upstream O2 sensor's heater isn't working.

Can I drive with P0135?

Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.

30% of the owner complaints that name P0135 also say the car warning lights and electrical faults. A complaint can describe more than one problem, so this doesn't prove the code caused it.

Common causes of P0135
  • Failed O2 sensor
  • Blown fuse
  • Wiring fault

A shop should confirm the cause with a scan and tests before replacing parts.

What owners describe
  • Warning lights and electrical faults: 30% of complaints
  • Stalls or shuts off: 30% of complaints
  • Loses power or goes into limp mode: 30% of complaints

Share of complaints naming the code whose text also mentions each problem.

Model years that report P0135 most

2017 Chevrolet Volt (2).

Related codes

P0136 P0133 P0137 P0138 P0131 P0140 P0141 P0128

Quick answers

What does P0135 mean?

O2 Sensor Heater Circuit (Bank 1 Sensor 1). The upstream O2 sensor's heater isn't working.

Can I drive with P0135?

Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.

What causes P0135?

Failed O2 sensor; Blown fuse; Wiring fault.

Counts: NHTSA owner complaints whose text names P0135. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.

Updated · Free to use with credit: Source: The Lemon Index (lemonindex.com). Get the data

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