Question 1

What does P0037 mean?

Accepted Answer

P0037 - O2 Sensor Heater Circuit Low (Bank 1 Sensor 2). Low voltage in downstream O2 sensor heater circuit on bank 1.

Question 2

What are the symptoms of P0037?

Accepted Answer

Check engine light, Slow downstream sensor warmup

Question 3

What causes P0037?

Accepted Answer

Burned-out heater, Wiring damage from exhaust heat, Blown fuse

Question 4

How much does it cost to fix P0037?

Accepted Answer

Typical repair cost: $80-$250. Check wiring along exhaust for heat damage.

P0037 — O2 Sensor Heater Circuit Low (Bank 1 Sensor 2)

Don't guess — diagnose P0037 the right way