DTC P2BF4-12: Exhaust Flow Control Valve "A" Position Circuit High Circuit Short to Battery [09/2022 - 09/2024]: Description

WARNING: This page is about a different car, the 2025 Toyota GR Corolla, 2024 Toyota GR Corolla, and 2023 Toyota GR Corolla. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P26C5-18.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Note
P2BF4-12	Exhaust Flow Control Valve "A" Position Circuit High Circuit Short to Battery	Diagnosis condition: Ignition switch ON Abnormal condition: The exhaust pipe gas control actuator sub-assembly (opening angle sensor) output voltage is higher than 4.73 V. Malfunction time: 3 seconds or more Trip logic: 1 trip detection logic Detection conditions: Continuous Sensors/components used for detection: Exhaust pipe gas control actuator sub-assembly (opening angle sensor)	Open or short in exhaust pipe gas control actuator sub-assembly circuit Exhaust pipe gas control actuator sub-assembly ECM	Does not come on	SAE Code: P2BF7

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

P2BF4-12

Exhaust Flow Control Valve "A" Position Circuit High Circuit Short to Battery

Diagnosis condition:

Ignition switch ON

Abnormal condition:

The exhaust pipe gas control actuator sub-assembly (opening angle sensor) output voltage is higher than 4.73 V.

Malfunction time:

3 seconds or more

Trip logic:

1 trip detection logic

Detection conditions:

Continuous

Sensors/components used for detection:

Exhaust pipe gas control actuator sub-assembly (opening angle sensor)

Open or short in exhaust pipe gas control actuator sub-assembly circuit
Exhaust pipe gas control actuator sub-assembly
ECM

Does not come on

SAE Code: P2BF7