Emissions

P0062 — O2 Sensor Heater Control Circuit, Bank 2 Sensor 3

Severity: low Safe to drive

What P0062 means

The engine computer switches a heater inside the oxygen sensor so it reaches operating temperature quickly and reads exhaust accurately. P0062 means it detected a problem in the heater circuit of Bank 2, Sensor 3, such as an open, a short or out-of-range resistance. Sensor 3 is typically a downstream sensor, and not every vehicle has one.

Symptoms

  • Check Engine light on
  • Possible slight drop in fuel economy
  • Failed emissions test
  • Longer warm-up before oxygen sensor feedback is used
  • Rarely, an unstable idle

Possible causes

  1. Open or shorted heater wiring, or a poor connector contact
  2. Failed Bank 2 Sensor 3 oxygen sensor (burned-out heater element)
  3. Blown fuse in the heater power supply, where one is used
  4. PCM output driver fault (uncommon)

How to diagnose

  1. Read all codes and freeze-frame data, and locate Bank 2 Sensor 3 on your specific vehicle
  2. Inspect the sensor harness and connector for chafing, melting, corrosion or exhaust damage
  3. Check the heater fuse and relay using the wiring diagram
  4. Measure the heater resistance at the sensor pins and compare with the service spec
  5. Check for power and the ground-side control signal at the connector with the ignition on
  6. Test the wires back to the PCM for opens and shorts to ground or voltage
  7. Look for exhaust leaks near the sensor
  8. Clear the code and confirm it does not return

Common fixes

  • Repair damaged wiring or replace the connector
  • Replace the Bank 2 Sensor 3 oxygen sensor
  • Replace a blown fuse after finding the cause of the overload
  • Update software or replace the PCM only after everything else is ruled out

P0062 on different brands

Ford · manuals
Ford may report this as P0062:1E, which points to its heater resistance monitor for Bank 2; it describes the detected condition rather than a confirmed failed part.

Questions and answers

Can I drive with P0062?

Usually yes, since engine performance is rarely affected. Emissions may get worse and the light will stay on, so have it diagnosed soon.

What does Bank 2 Sensor 3 mean?

Bank 2 is the side of the engine without cylinder 1. Sensor 3 is the third oxygen sensor on that side, typically located behind or after the catalytic converter.

Do I always need a new sensor?

No. Check the fuse, wiring and connector first, then the heater resistance. Replace the sensor if the heater is faulty and the circuit tests good.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.