Toyota Tacoma (2015-2018) Service Manual: Diagnostic Trouble Code Chart

Toyota Tacoma (2015-2018) Service Manual / Engine Immobiliser / Engine Immobiliser System(w/o Smart Key System) / Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

HINT:

If a trouble code is stored during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to "See page" below.

Transponder Key ECU Assembly

DTC Code	Detection Item	See page
B2780	Push Switch / Key Unlock Warning Switch Malfunction
B2784	Antenna Coil Open / Short
B2793	Transponder Chip Malfunction
B2794	Unmatched Encryption Code
B2797	Communication Malfunction No. 1
B2798	Communication Malfunction No. 2

HINT:

The DTCs for the engine immobiliser system are specified below. If other codes are output, check the DTC chart for the SFI system.

ECM

DTC Code	Detection Item	See page
B2799*1	Engine Immobiliser System Malfunction
B279986*2	Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid
B279A*1	Theft Deterrent System Communication Line High Fixation
B279A12*2	Engine Immobiliser System Circuit Short to Battery
B279C*1	Theft Deterrent System Presence Detection
B279C95*2	Engine Immobiliser System Incorrect Assembly

*1: for 2TR-FE
*2: for 2GR-FKS

Data List / Active Test

DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any p ...

Theft Deterrent System Communication Line High Fixation (B279A,B279A12)

DESCRIPTION If the communication line (EFIO-IMI) to the transponder key ECU assembly is stuck high (e.g. shorted to +B), the ECM stores this DTC. DTC No. DTC Detection Condit ...

Other materials:

Torque Converter Clutch Circuit Short to Battery or Open (P074015)
DESCRIPTION Shift solenoid valve SL is turned on and off by signals from the ECM to control the hydraulic pressure acting on the lock-up relay valve, which then controls operation of the lock-up clutch. DTC No. DTC Detection Condition Trouble Area SA ...

Air Mix Damper Control Servo Motor Circuit (Passenger Side) (B1441/41)
DESCRIPTION This No. 2 air conditioning radiator damper servo sub-assembly (for front passenger side air mix) is controlled by the air conditioning amplifier assembly and moves the air mix damper (for front passenger side) to the desired position. DTC No. DTC Detection Co ...

Short to +B in Outer Mirror Indicator(Master) (C1AB0)
DESCRIPTION This DTC is stored when the blind spot monitor sensor LH detects a +B short in the blind spot monitor indicator LH. DTC Code DTC Detection Condition Trouble Area C1AB0 With the blind spot monitor main switch assembly (warni ...