DTC P0037 Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2); DTC P0038 Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2): Description
WARNING: This page is about a different car, the 2007 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
Refer to DTC P0136 .
HINT:
The heated oxygen sensor heater circuit uses a relay or the +B side of the circuit.
DTC DETECTION CONDITION
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0037 | Heater current is less than 0.3 A when the heater operates with +B greater than 10.5 V (1 trip detection logic) |
|
| P0038 | When the heater operates, heater current exceeds 2 A (1 trip detection logic) |
|
HINT:
- Sensor 1 refers to the sensor mounted before the TWC and is located near the engine assembly.
- Sensor 2 refers to the sensor mounted after the TWC and is located far from the engine assembly.