DTC C1464: Front Speed Sensor RH Circuit; DTC C1465: Front Speed Sensor LH Circuit [12/2017 - 10/2020]: Description

for 2WD
The speed sensor detects wheel speed and sends the appropriate signals to the skid control ECU assembly. These signals are used for brake control.

Speed sensor rotors have rows of alternating N and S magnetic poles, and their magnetic fields change when the rotors turn.

Each speed sensor detects that magnetic change and sends a pulse signal to the skid control ECU assembly.

HINT:

When the connectors between the speed sensor and skid control ECU assembly are connected, the following waveform is output.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
for AWD
The speed sensor detects wheel speed and sends the appropriate signals to the skid control ECU assembly. These signals are used for brake control.

Speed sensor rotors have rows of alternating N and S magnetic poles, and their magnetic fields change when the rotors turn.

Each speed sensor detects that magnetic change and sends a pulse signal to the skid control ECU assembly.

HINT:

When the connectors between the speed sensor and skid control ECU assembly are connected, the following waveform is output.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

DTC No.	Detection Item	INF Code	DTC Detection Condition	Trouble Area	Note
C1464	Front Speed Sensor RH Circuit	251 252 253 254 255 262	INF Code: 251 At a vehicle speed of 10 km/h (6 mph) or more, an open or short signal occurs in the speed sensor circuit. INF Code: 252 A malfunction occurs in 2 or more wheels. INF Code: 253 An open is detected in the speed sensor signal circuit for 0.5 seconds or more. INF Code: 254 Instantaneous interruption of sensor signal from the malfunctioning wheel occurs 255 times or more. INF Code: 255 Frequency of 2.4 kHz or more is input. INF Code: 262 Either of the following is detected: When IG1 voltage is 9.5 V or more, sensor supply voltage drops for 0.5 seconds or more. When IG1 voltage is 9.5 V or more, sensor supply voltage fluctuates for 60 seconds or more.	INF Code: 251, 252, 253, 254 Open or short in speed sensor Improperly installed speed sensor, or abnormal clearance between sensor and rotor Open or short in wire harness Improperly connected connector, deformation or corrosion of terminals Resistance in speed sensor circuit Front speed sensor RH skid control ECU assembly INF Code: 255 Open or short in speed sensor Open or short in wire harness Front speed sensor RH Front speed sensor rotor RH (Front axle hub sub-assembly RH) INF Code: 262 Open or short in wire harness skid control ECU assembly	-
C1465	Front Speed Sensor LH Circuit	264 265 266 267 268 275	INF Code: 264 At a vehicle speed of 10 km/h (6 mph) or more, an open or short signal occurs in the speed sensor circuit. INF Code: 265 A malfunction occurs in 2 or more wheels. INF Code: 266 An open is detected in the speed sensor signal circuit for 0.5 seconds or more. INF Code: 267 Instantaneous interruption of sensor signal from the malfunctioning wheel occurs 255 times or more. INF Code: 268 Frequency of 2.4 kHz or more is input. INF Code: 275 Either of the following is detected: When IG1 voltage is 9.5 V or more, sensor supply voltage drops for 0.5 seconds or more. When IG1 voltage is 9.5 V or more, sensor supply voltage fluctuates for 60 seconds or more.	INF Code: 264, 265, 266, 267 Open or short in speed sensor Improperly installed speed sensor, or abnormal clearance between sensor and rotor Open or short in wire harness Improperly connected connector, deformation or corrosion of terminals Resistance in speed sensor circuit Front speed sensor LH skid control ECU assembly INF Code: 268 Open or short in speed sensor Open or short in wire harness Front speed sensor LH Front speed sensor rotor LH (Front axle hub sub-assembly LH) INF Code: 275 Open or short in wire harness skid control ECU assembly	-

DTC No.

Detection Item

INF Code

DTC Detection Condition

Trouble Area

Note

C1464

Front Speed Sensor RH Circuit

251
252
253
254
255
262

INF Code: 251
- At a vehicle speed of 10 km/h (6 mph) or more, an open or short signal occurs in the speed sensor circuit.

INF Code: 252
- A malfunction occurs in 2 or more wheels.

INF Code: 253
- An open is detected in the speed sensor signal circuit for 0.5 seconds or more.

INF Code: 254
- Instantaneous interruption of sensor signal from the malfunctioning wheel occurs 255 times or more.

INF Code: 255
- Frequency of 2.4 kHz or more is input.

INF Code: 262
- Either of the following is detected:
  1. When IG1 voltage is 9.5 V or more, sensor supply voltage drops for 0.5 seconds or more.
  2. When IG1 voltage is 9.5 V or more, sensor supply voltage fluctuates for 60 seconds or more.

INF Code: 251, 252, 253, 254
- Open or short in speed sensor
- Improperly installed speed sensor, or abnormal clearance between sensor and rotor
- Open or short in wire harness
- Improperly connected connector, deformation or corrosion of terminals
- Resistance in speed sensor circuit
- Front speed sensor RH
- skid control ECU assembly

INF Code: 255
- Open or short in speed sensor
- Open or short in wire harness
- Front speed sensor RH
- Front speed sensor rotor RH (Front axle hub sub-assembly RH)

INF Code: 262
- Open or short in wire harness
- skid control ECU assembly

C1465

Front Speed Sensor LH Circuit

264
265
266
267
268
275

INF Code: 264
- At a vehicle speed of 10 km/h (6 mph) or more, an open or short signal occurs in the speed sensor circuit.

INF Code: 265
- A malfunction occurs in 2 or more wheels.

INF Code: 266
- An open is detected in the speed sensor signal circuit for 0.5 seconds or more.

INF Code: 267
- Instantaneous interruption of sensor signal from the malfunctioning wheel occurs 255 times or more.

INF Code: 268
- Frequency of 2.4 kHz or more is input.

INF Code: 275
- Either of the following is detected:
  1. When IG1 voltage is 9.5 V or more, sensor supply voltage drops for 0.5 seconds or more.
  2. When IG1 voltage is 9.5 V or more, sensor supply voltage fluctuates for 60 seconds or more.

INF Code: 264, 265, 266, 267
- Open or short in speed sensor
- Improperly installed speed sensor, or abnormal clearance between sensor and rotor
- Open or short in wire harness
- Improperly connected connector, deformation or corrosion of terminals
- Resistance in speed sensor circuit
- Front speed sensor LH
- skid control ECU assembly

INF Code: 268
- Open or short in speed sensor
- Open or short in wire harness
- Front speed sensor LH
- Front speed sensor rotor LH (Front axle hub sub-assembly LH)

INF Code: 275
- Open or short in wire harness
- skid control ECU assembly

HINT:

DTC C1464 is for the front speed sensor RH.
DTC C1465 is for the front speed sensor LH.

DTC DETECTION CONDITIONS: C1464 INF CODE: 262

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	IG1 terminal voltage is 9.5 V or more	◦	◦
Malfunction Status	The sensor power supply voltage is low	◦	-
Malfunction Status	The sensor power supply voltage is unstable	-	◦
Detection Time		0.5 seconds or more	60 seconds or more
Number of Trips		1 trip	1 trip

DTC DETECTION CONDITIONS: C1465 INF CODE: 275

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	IG1 terminal voltage is 9.5 V or more	◦	◦
Malfunction Status	The sensor power supply voltage is low	◦	-
Malfunction Status	The sensor power supply voltage is unstable	-	◦
Detection Time		0.5 seconds or more	60 seconds or more
Number of Trips		1 trip	1 trip