DTC P144C: Open in Secondary Air Injection System Heater Control Circuit; DTC P144D: Short in Secondary Air Injection System Heater Control Circuit [08/2015 - 08/2017]: Description
WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
The ECM operates the air pump heater relay (AI-HTR) which causes the air pump heater to operate.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P144C | Open or short in the air pump heater relay circuit for 5 seconds (1 trip detection logic). |
|
| P144D | Open or short in the air pump heater relay circuit for 5 seconds (1 trip detection logic). |
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