1AZ-FE, 2AZ-FE Toyota Camry engine management fault codes

SAE Code/Code

System

Status

Probable fault location

MEM

Р0100/31

Air mass meter
Open or short circuit in the air mass meter circuit at a speed of less than 4000 min-1 for 3 s or more
Air mass meter
Wiring and connectors
Electronic control unit
+
+

Р0110/24

Intake air temperature sensor
Open or short in intake air temperature sensor circuit for 0.5 seconds or more
Inlet air temperature sensor (in flow meter)
Wiring and connectors
Electronic control unit
+**
+

Р0115/22

Coolant temperature sensor
Open or short in coolant temperature sensor circuit for 0.5 seconds or more
Sensor signal voltage less than 0.1V or more than 4.9V for 0.5s or more
Coolant temperature sensor
Wiring and connectors
Electronic control unit
+
+

Р0116/22

Coolant temperature sensor - operation*
The engine has been started at temperatures below -7°C. The sensor signal corresponds to a coolant temperature of less than 20 ° C 20 minutes or more after starting
The engine is started at a temperature of -7 to +10 °C. The sensor signal corresponds to a coolant temperature of less than 20 °C 5 minutes or more after starting
Cooling system
Coolant temperature sensor
Thermostat
+
+

Р0120/41

Throttle position sensor
Open or short in throttle position sensor circuit for 5 seconds or more
Sensor signal voltage less than 0.1 V or more than 4.9 V for 5 seconds or more
Throttle position sensor
Wiring and connectors
Electronic control unit
+ A*
+

Р0121/41

Throttle position sensor - operation*
After reaching 30 km/h at least once, the sensor signal voltage is out of range for speeds over 0 km/h
- Throttle position sensor
+
+

Р0125/91

AFS sensor - low coolant temperature
After warming up the engine, the sensor signal does not change for 90 seconds or more under the following conditions:
rpm over 1500 min^-1;
speed 40-100 km/h;
throttle not fully closed;
140 or more seconds after engine start
AFS sensor (B1S1, B2S1)
Fuel system
Injectors
Ignition system
Leaks in the exhaust system
Wiring and connectors
Electronic control unit
+
+

Р0136/27

Oxygen sensor B1S2*
The engine is warm (coolant temperature is above 40 *C), the speed is more than 1400 min^-1, the speed is more than 40 km/h. Oxygen sensor signal voltage stays above 0.4V or below 0.5V
Oxygen sensor
Wiring and connectors
+
+

Р0141/27

B1S2 oxygen sensor heater*
When the heater is operating, the current is more than 2 A or less than 0.2 A
Oxygen sensor heater
Wiring and connectors
Electronic control unit
+
+

P0156/29

B2S2 oxygen sensor*
The engine is warm (coolant temperature above 40 °C), RPM over 1400 min, speed over 40 km/h. Oxygen sensor signal voltage stays above 0.4V or below 0.5V
Oxygen sensor
Wiring and connectors
+
+

Р0161/27

B2S2 oxygen sensor heater*
When the heater is operating, the current is more than 2 A or less than 0.2 A
Oxygen sensor heater
Wiring and connectors
Electronic control unit
+
+

Р0171/25

Lean signal (B1)‘
On a warm engine during feedback operation, the fuel balance is not correct (over-lean)
Air intake system
Nozzles (clogging)
Air mass meter
Fuel line pressure
Exhaust system (leak)
Coolant temperature sensor
AFS Sensor(B1S1,B2S1)
Wiring and connectors
Electronic control unit
+
+

P0172/26

Rich signal (B1)*
On a warm engine, when running on feedback, the fuel balance does not normal (overenrichment)
See code P0171
+
+

Р0174/25

Lean signal (B2)*
On a warm engine during feedback operation, the fuel balance is not correct (over-lean)
See code P0171
+
+

Р0175/26

Rich signal (B2)*
The fuel balance is not correct on a warm engine during feedback operation (over-enrichment)
See code P0171
+
+

P0300/90

Misfires - random or multiple
Random misfires detected within 200 or 1000 revolutions
Wiring and connectors
Ignition system
Injectors
Fuel pressure
Air mass meter
Coolant temperature sensor
Compression
Valve clearances
Valve phases
Electronic control unit
+
+

Р0З01/93

Misfire - Cylinder 1
Within 200 revolutions, misfires are detected, which can lead to overheating of the catalytic converter ("CHECK ENGINE* indicator blinks)
After 1000 revolutions, misfires are detected, which can lead to increased emissions*
See code P0300
+
+

Р0302/93

Misfire - Cylinder 2
See code Р0З01
See code P0300
+
+

P0303/90

Misfire - Cylinder 3
See code Р0З01
See code P0300
+
+

Р0З04/90

Misfire - Cylinder 4
See code P0301
See code P0300
+
+

Р0325/52

Knock sensor (B1)
No signal from the knock sensor at a speed of 1800-5000 rpm^-1 for 5 seconds or more
Knock sensor (loose fit)
Wiring and connectors
Electronic control unit
+
+

Р0335/12

Crankshaft position sensor*
No signal from the crankshaft position sensor when cranking the starter for 4.7 seconds or more
Crankshaft position sensor
Wiring and connectors
Electronic control unit
+
+

Р0335/13

Crankshaft position sensor*
No signal from the crankshaft position sensor at a speed of more than 600 min^-1
Crankshaft position sensor
Wiring and connectors
Electronic control unit
+
+

P0340/12

Camshaft position sensor*
No signal from the camshaft position sensor when cranking the starter for 5 seconds or more
Camshaft position sensor
Wiring and connectors
Inlet valve manifold
Electronic control unit
+
+

Р0340/12

Camshaft position sensor
No signal from the camshaft position sensor at a speed of more than 600 min ^-1
Camshaft position sensor
Wiring and connectors
Intake camshaft
Electronic control unit
+
0

Р0420/94

Catalytic Converter - Low Efficiency (B1)*
The engine is warm, the catalytic converter is hot, and the vehicle is moving at a constant speed and at a constant engine speed. Signals from sensors B1S1 and B1S2 have similar amplitudes
Exhaust system (leak)
Oxygen sensor
Wiring and connectors
Catalytic Converter
+
+

Р0430/94

Catalytic Converter - Low Efficiency (B2)‘
The engine is warm, the catalytic converter is hot, and the vehicle is moving at a constant speed and at a constant engine speed. Signals from sensors B2S1 and B2S2 have similar amplitudes
Exhaust system (leak)
Oxygen sensor
Wiring and connectors
Catalytic Converter
+
+

Р0443/94

EVAP valve
There is no correct response to the signals of the electronic control unit
EUAP electropneumatic valve
Wiring and connectors
Electronic control unit
+
+

Р0500/42

Speed sensor*
No input from speed sensor when vehicle is moving for 8 seconds or more
Instrument cluster
Speed sensor
Wiring and connectors
ele Control unit
+
+

Р0505/33

ISCV valve
Idle speed is significantly different from the required one
ISCV valve
Wiring and connectors
A/C switch circuit
Air intake system
Electronic control unit
+
+

Р1130

AFS Sensor - Range/Performance (B1S1)*
- Engine running after warm up, AFS signal voltage remains above 4.5V
AFS sensor
Wiring and connectors
Air intake system
+**
+

Р1133

AFS Sensor - Response (B1S1)*
Engine warm, RPM over 1400 min^-1, Speed over 60 km/h. AFS sensor response characteristics degrade
AFS sensor (B1S1, B2S1)
Wiring and connectors
Air intake system
Fuel pressure
Injectors
Electronic control unit
+**
+

Р1135

AFS sensor heater (B1S1)*
When the heater is running, the current is more than 8A or less than 0.25A
AFS sensor heater
Wiring and connectors
Electronic control unit
+

Р1150

AFS Sensor - Range/Performance (B2S1)*
Engine running after warm-up, AFS signal voltage remains above 4.5V
Engine running after warm-up, AFS signal voltage remains at 3.30V
Open or short in AFS sensor circuit
AFS sensor
Wiring and connectors
Air intake system
Fuel pressure
Injectors
Electronic control unit
+

Р1153

AFS Sensor - Response (B2S1)*
Engine warm, RPM over 1400 min^-1, Speed over 60 km/h. AFS sensor response characteristics degrade
AFS Sensor(B1S1. B2S1)
Wiring and connectors
Air intake system
Fuel pressure
Injectors
Electronic control unit
+**
+

P1155

AFS sensor heater (B2S1 )*
When the heater is running, the current is more than 8A or less than 0.25A
AFS sensor heater
Wiring and connectors
Electronic control unit
+

Р1300/14

Switch #1
No IGF input with engine running for 1 second or more
Ignition system
Ignition coil
Wiring and connectors
Electronic control unit
+
+

Р1305/15

Switch #2
No IGF input with engine running for 1 second or more
Ignition system
Ignition coil
Wiring and connectors
Electronic control unit
+
+

Р1310/14

Switch #3
No IGF input with engine running for 1 second or more
Ignition system
Ignition coil
Wiring and connectors
Electronic control unit
+
+

Р1315/15

Switch #4
No IGF input with engine running for 1 second or more
System! ignition
Ignition coil
Wiring and connectors
Electronic control unit
+
+

Р1335/13

Crankshaft position sensor
At a speed of more than 1000 min^-1 3 seconds after starting the engine, the signal from the crankshaft position sensor is not received for more than 0.05 s
Crankshaft position sensor
Wiring and connectors
Electronic control unit
+

Р1346/18

WT system (sensor)
Mismatch in the signals of the crankshaft position sensor and the camshaft position sensor
Mechanical failure (chain link slipped, chain stretched)
Electronic control unit
+
+

Р1349/59

WT system (control)
Coolant temperature 80-110°C. RPM
Valve phases
WT valve
+

Р1520

Brake light switch*
Brake light switch does not turn off when vehicle is moving
Brake light switch
Wiring and connectors
Electronic control unit
+
+

Р1600

Power supply for the electronic control unit
Open circuit in the backup power supply of the electronic control unit for 3 s or more
Wiring and connectors
Electronic control unit
+
+

Р1656

WT system (valve)
Rupture or short circuit in cEpi valve system WT
WT valve
Wiring and connectors
Electronic control unit
+
+

Р1780

Start inhibit switch*
The simultaneous activation of two ranges (“N”, “2”, “L”. “R”) is determined. 1
Start inhibit switch
Wiring and connectors
Electronic control unit
+
+

Notes: "CE" - indicator "CHECK ENGINE" ("+" - lights up when a malfunction is detected, "-" - does not light up when a malfunction is detected). "MEM" - writing to memory ("+" - the code is stored in the memory of the control unit, "-" - the code is not stored in the memory of the control unit). * A 2-stage fault detection algorithm is used. **models with EOBD or European versions