DTC P0235-11: Turbocharger/Supercharger Boost Sensor "A" Circuit Short to Ground [09/2022 - ]: Description

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Fig 1: Internal Sensor In The No. 2 Turbo Pressure Sensor Detects The Intercooler Internal Pressure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

The internal sensor in the No. 2 turbo pressure sensor detects the intercooler internal pressure as a voltage.

The turbo pressure sensor consists of a semiconductor which utilizes the characteristics of a silicon chip that changes its electrical resistance when pressure is applied to it. The sensor converts the intake air pressure into an electrical signal, and sends it to the ECM in an amplified form.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P0235-11	Turbocharger/Supercharger Boost Sensor "A" Circuit Short to Ground	The No. 2 turbo pressure sensor output voltage is less than 0.97 V for 3 seconds or more (1 trip detection logic).	Open or short in No. 2 turbo pressure sensor circuit No. 2 turbo pressure sensor ECM	Comes on	DTC stored	SAE Code: P0237 DTC for Mexico Models: Applies

HINT:

When this DTC is output, check the boost pressure in the Data List. Enter the following menus: Powertrain / Engine / Data List / Boost Pressure Sensor.

DTC No.	Boost Pressure Sensor	Malfunction
P0235-11	Less than 11 kPa [1.6 psi]	Short to ground in PTA circuit Short in PTA to EPTA circuit Open in VPTA circuit

If the Data List values is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.