Codes P0030 P0036 and P0443?

Tiny
LEAWILLIAMS
  • MEMBER
  • 2009 TOYOTA HIGHLANDER
  • 4WD
  • AUTOMATIC
  • 220,200 MILES
I am throwing codes P0030, P0036, and P0443. I just need to know what parts I need to replace to fix it.
Tuesday, September 24th, 2024 AT 12:26 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,390 POSTS
Codes don't tell you "Replace part X" they simply tell you the system that the ECM thinks has a problem. In your case the codes you list are not codes Toyota used in the control system on that vehicle. What was used to scan for those codes and which engine do you have? Perhaps that tool has a known issue with misidentifying codes on Toyota vehicles. Some can act that way. These are all generic codes that may apply though, the first 2 are Oxygen Sensor heater codes. P0030 is O2 heater control circuit Bank 1 Sensor 1 and the P0036 is O2 heater control circuit Bank 1 Sensor 2. Those generally indicate an issue in the wiring to the sensors. The P0443, however, is an EVAP code related to the purge valve. Once we can be sure which codes you have we can proceed.
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Tuesday, September 24th, 2024 AT 2:40 PM

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