DTC C1464: Front Speed Sensor RH Circuit; DTC C1465: Front Speed Sensor LH Circuit [10/2020 - 10/2023]: Description

for 2WD
The speed sensor detects wheel speed and sends the appropriate signals to the skid control ECU (brake actuator 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 (brake actuator assembly).

HINT:

When the connectors between the speed sensor and skid control ECU (brake actuator 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 (brake actuator 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 (brake actuator assembly).

HINT:

When the connectors between the speed sensor and skid control ECU (brake actuator 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	MIL	Note
C1464	Front Speed Sensor RH Circuit	- 251 252 253 254 255 262 306	INF Code: - When speed sensor is normal (no shorts or opens in sensor circuit and supply power is normal), speed sensor supply power is on, and skid control ECU assembly supply power is not low, speed sensor power supply is invalid for 60 seconds or more consecutively. 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: 306 At a vehicle speed below 200 km/h (124 mph), the speed sensor generates pulses of under 300 μs at 6 ms intervals.	INF Code: - Open or short in wire harness Front speed sensor RH Skid control ECU assembly 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 INF Code: 306 Foreign matter attached to speed sensor Speed sensor rotor malfunction (foreign matter attached) Front speed sensor RH	Comes on (When only SAE Code C0507 (Case 1, 2 and 3), C0508, C0509, C050A (Case 2), C140C or C14E4 (Case 1 and 2) is stored)	INF Code -: SAE Code C14E4 (Case 2) INF Code 251: SAE Code C0507 (Case 1 and 2) INF Code 252: SAE Code C140C INF Code 253: SAE Code C0508 and C0509 INF Code 254: SAE Code C050A (Case 2) INF Code 262: SAE Code C14E4 (Case 1) INF Code 306: SAE Code C0507 (Case 3)
C1465	Front Speed Sensor LH Circuit	- 264 265 266 267 268 275 307	INF Code: - When speed sensor is normal (no shorts or opens in sensor circuit and supply power is normal), speed sensor supply power is on, and skid control ECU assembly supply power is not low, speed sensor power supply is invalid for 60 seconds or more consecutively. 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: 307 At a vehicle speed below 200 km/h (124 mph), the speed sensor generates pulses of under 300 μs at 6 ms intervals.	INF Code: - Open or short in wire harness Front speed sensor LH Skid control ECU assembly 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 INF Code: 307 Foreign matter attached to speed sensor Speed sensor rotor malfunction (foreign matter attached) Front speed sensor LH	Comes on (When only SAE Code C0501 (Case 1, 2 and 3), C0502, C0503, C0504 (Case 2), C140B or C14E1 (Case 1 and 2) is stored)	INF Code -: SAE Code C14E1 (Case 2) INF Code 264: SAE Code C0501 (Case 1 and 2) INF Code 265: SAE Code C140B INF Code 266: SAE Code C0502 and C0503 INF Code 267: SAE Code C0504 (Case 2) INF Code 275: SAE Code C14E1 (Case 1) INF Code 307: SAE Code C0501 (Case 3)

DTC No.

Detection Item

INF Code

DTC Detection Condition

Trouble Area

MIL

Note

C1464

Front Speed Sensor RH Circuit

-
251
252
253
254
255
262
306

INF Code: -
- When speed sensor is normal (no shorts or opens in sensor circuit and supply power is normal), speed sensor supply power is on, and skid control ECU assembly supply power is not low, speed sensor power supply is invalid for 60 seconds or more consecutively.

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: 306
- At a vehicle speed below 200 km/h (124 mph), the speed sensor generates pulses of under 300 μs at 6 ms intervals.

INF Code: -
- Open or short in wire harness
- Front speed sensor RH
- Skid control ECU assembly

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

INF Code: 306
- Foreign matter attached to speed sensor
- Speed sensor rotor malfunction (foreign matter attached)
- Front speed sensor RH

Comes on
(When only SAE Code C0507 (Case 1, 2 and 3), C0508, C0509, C050A (Case 2), C140C or C14E4 (Case 1 and 2) is stored)

INF Code -: SAE Code C14E4 (Case 2)
INF Code 251: SAE Code C0507 (Case 1 and 2)
INF Code 252: SAE Code C140C
INF Code 253: SAE Code C0508 and C0509
INF Code 254: SAE Code C050A (Case 2)
INF Code 262: SAE Code C14E4 (Case 1)
INF Code 306: SAE Code C0507 (Case 3)

C1465

Front Speed Sensor LH Circuit

-
264
265
266
267
268
275
307

INF Code: -
- When speed sensor is normal (no shorts or opens in sensor circuit and supply power is normal), speed sensor supply power is on, and skid control ECU assembly supply power is not low, speed sensor power supply is invalid for 60 seconds or more consecutively.

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: 307
- At a vehicle speed below 200 km/h (124 mph), the speed sensor generates pulses of under 300 μs at 6 ms intervals.

INF Code: -
- Open or short in wire harness
- Front speed sensor LH
- Skid control ECU assembly

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

INF Code: 307
- Foreign matter attached to speed sensor
- Speed sensor rotor malfunction (foreign matter attached)
- Front speed sensor LH

Comes on
(When only SAE Code C0501 (Case 1, 2 and 3), C0502, C0503, C0504 (Case 2), C140B or C14E1 (Case 1 and 2) is stored)

INF Code -: SAE Code C14E1 (Case 2)
INF Code 264: SAE Code C0501 (Case 1 and 2)
INF Code 265: SAE Code C140B
INF Code 266: SAE Code C0502 and C0503
INF Code 267: SAE Code C0504 (Case 2)
INF Code 275: SAE Code C14E1 (Case 1)
INF Code 307: SAE Code C0501 (Case 3)

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