What does P0037 code mean?

Anonymous

∙ 10y ago

Updated: 8/18/2019

HO2S Heater Control Circuit Low Bank 1 Sensor2

symptoms
Other than the MIL light illuminating you may not notice any performance issues.

cause
A short in the O2 sensor heater circuit or the sensor itself
A faulty O2 sensor heater
Wiring or connectors are broken or frayed to the sensor or relay
Bad PCM or ECM

The fix
Correct wiring short or loose connector found in inspection.
and/or
Replace the bank 1 sensor 2, O2 sensor
Replace PCM if circuit has failed and no wiring issues present, good O2 sensor

Wiki User

∙ 10y ago

What else can I help you with?

What does code 37 mean?

Do you mean code P0037? If so:P0037 HO2S Heater Control Circuit Low (Bank 1 Sensor 2)

P0037 engine code for 2006 Toyota sienna?

The P0037 engine code for a 2006 Toyota Sienna indicates a problem with the heated oxygen sensor (HO2S) circuit, specifically related to sensor 2 (downstream) on bank 1. This can be caused by a faulty sensor, damaged wiring, or issues with the engine control module (ECM). It's important to diagnose the specific cause to ensure proper repairs, as this code can affect engine performance and fuel efficiency. A professional mechanic can perform tests to pinpoint the exact issue.

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