Yaris 2007

1.5L L4 VIN - Auto 6

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Trouble Code: C2121/21



No Signal from Transmitter ID1 in Main Mode

Possible Causes:



Tire pressure warning valve and transmitter
 
Tire pressure warning antenna and receiver
 
Wire harness or connector
 
Tire pressure warning ECU
 

Trouble Code: C2122/22



No Signal from Transmitter ID2 in Main Mode

Possible Causes:



Tire pressure warning valve and transmitter
 
Tire pressure warning antenna and receiver
 
Wire harness or connector
 
Tire pressure warning ECU
 

Trouble Code: C2123/23



No Signal from Transmitter ID3 in Main Mode

Possible Causes:



Tire pressure warning valve and transmitter
 
Tire pressure warning antenna and receiver
 
Wire harness or connector
 
Tire pressure warning ECU
 

Trouble Code: C2124/24



No Signal from Transmitter ID4 in Main Mode

Possible Causes:



Tire pressure warning valve and transmitter
 
Tire pressure warning antenna and receiver
 
Wire harness or connector
 
Tire pressure warning ECU
 

Trouble Code: C2126/26



Transmitter ID Not Received In Main Mode

Possible Causes:



ID registration failure
 
Tire pressure warning valve and transmitter
 
Tire pressure warning antenna and receiver
 
Harness or connector
 
Tire pressure warning ECU
 

Trouble Code: C2141/41



Transmitter ID1 Error

Possible Causes:



Tire pressure warning valve and transmitter
 
Tire pressure warning ECU
 

Trouble Code: C2142/42



Transmitter ID2 Error

Possible Causes:



Tire pressure warning valve and transmitter
 
Tire pressure warning ECU
 

Trouble Code: C2143/43



Transmitter ID3 Error

Possible Causes:



Tire pressure warning valve and transmitter
 
Tire pressure warning ECU
 

Trouble Code: C2144/44



Transmitter ID4 Error

Possible Causes:



Tire pressure warning valve and transmitter
 
Tire pressure warning ECU
 

Trouble Code: C2165/65



Abnormal Temperature Inside ID1 Tire

Possible Causes:



Tires
 
Tire pressure warning valve and transmitter
 
Tire pressure warning ECU
 

Trouble Code: C2166/66



Abnormal Temperature Inside ID2 Tire

Possible Causes:



Tires
 
Tire pressure warning valve and transmitter
 
Tire pressure warning ECU
 

Trouble Code: C2167/67



Abnormal Temperature Inside ID3 Tire

Possible Causes:



Tires
 
Tire pressure warning valve and transmitter
 
Tire pressure warning ECU
 

Trouble Code: C2168/68



Abnormal Temperature Inside ID4 Tire

Possible Causes:



Tires
 
Tire pressure warning valve and transmitter
 
Tire pressure warning ECU
 

Trouble Code: C2171/71



Transmitter ID not Registered

Possible Causes:



Tire pressure warning ECU
 

Trouble Code: C2173/73



Vehicle Speed or Engine Speed Signal Malfunction

Possible Causes:



Combination meter
 
ECM
 
Harness or connector
 
Tire pressure warning ECU
 

Trouble Code: C2176/76



Receiver Error

Possible Causes:



Tire pressure warning ECU
 

Trouble Code: C2191/91



Vehicle Speed Signal Error (Test Mode DTC)

Possible Causes:



Combination meter
 
Vehicle speed sensor
 
Harness or connector
 
Tire pressure warning ECU
 

Trouble Code: C2194/94



Engine Speed Signal Error (Test Mode DTC)

Possible Causes:



ECM
 
Harness or connector
 
Tire pressure warning ECU
 

Trouble Code: P0010



Camshaft Position "A" Actuator Circuit (Bank 1)

Possible Causes:



Open or short in camshaft timing oil control valve assembly circuit
 
Camshaft timing oil control valve assembly
 
ECM
 

Trouble Code: P0011



Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)

Possible Causes:



Valve timing
 
OCV
 
OCV filter
 
Camshaft timing gear assembly
 
ECM
 

Trouble Code: P0012



Camshaft Position "A" - Timing Over-Retarded (Bank 1)

Possible Causes:



Valve timing
 
OCV
 
OCV filter
 
Camshaft timing gear assembly
 
ECM
 

Trouble Code: P0016



Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)

Possible Causes:



Mechanical system (Timing chain has jumped tooth or chain stretched)
 
ECM
 

Trouble Code: P0031



Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

Possible Causes:



Open in A/F sensor heater circuit
 
A/F sensor heater (sensor 1)
 
Integration relay (EFI relay)
 
ECM
 

Trouble Code: P0032



Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1)

Possible Causes:



Short in A/F sensor heater circuit
 
A/F sensor heater (sensor 1)
 
Integration relay (EFI relay)
 
ECM
 

Trouble Code: P0037



Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2)

Possible Causes:



Open in HO2 sensor heater circuit
 
HO2 sensor heater (sensor 2)
 
Integration relay (EFI relay)
 
ECM
 

Trouble Code: P0038



Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2)

Possible Causes:



Short in HO2 sensor heater circuit
 
HO2 sensor heater (sensor 2)
 
Integration relay (EFI relay)
 
ECM
 

Trouble Code: P0100



Mass or Volume Air Flow Circuit

Possible Causes:



Open or short in MAF meter circuit
 
MAF meter
 
ECM
 

Trouble Code: P0101



Mass Air Flow Circuit Range / Performance Problem

Possible Causes:



Mass Air Flow (MAF) meter
 
Air induction system
 
PCV hose connections
 

Trouble Code: P0102



Mass or Volume Air Flow Circuit Low Input

Possible Causes:



Open or short in MAF meter circuit
 
MAF meter
 
ECM
 

Trouble Code: P0103



Mass or Volume Air Flow Circuit High Input

Possible Causes:



Open in Mass Air Flow (MAF) meter power source circuit
 
Open or short in VG circuit
 
MAF meter
 
ECM
 

Trouble Code: P0110



Intake Air Temperature Circuit

Possible Causes:



Open or short in IAT sensor circuit
 
IAT sensor (built into MAF meter)
 
ECM
 

Trouble Code: P0112



Intake Air Temperature Circuit Low Input

Possible Causes:



Short in intake air temperature sensor circuit
 
Intake air temperature sensor (built into mass air flow meter)
 
ECM
 

Trouble Code: P0113



Intake Air Temperature Circuit High Input

Possible Causes:



Open in IAT sensor circuit
 
IAT sensor (built into MAF meter)
 
ECM
 

Trouble Code: P0115



Engine Coolant Temperature Circuit Malfunction

Possible Causes:



Open or short in ECT sensor circuit
 
ECT sensor
 
ECM
 

Trouble Code: P0116



Engine Coolant Temperature Circuit Range / Performance Problem

Possible Causes:



Thermostat
 
ECT sensor
 

Trouble Code: P0117



Engine Coolant Temperature Circuit Low Input

Possible Causes:



Short in ECT sensor
 
ECT sensor
 
ECM
 

Trouble Code: P0118



Engine Coolant Temperature Circuit High Input

Possible Causes:



Open in ECT sensor circuit
 
ECT sensor
 
ECM
 

Trouble Code: P0121



THROTTLE/PEDAL POSITION SENSOR/SWITCH -A- CIRCUIT RANGE/PERFORMANCE PROBLEM

Possible Causes:



TP sensor (built into throttle body)
 

Trouble Code: P0125



Insufficient Coolant Temperature for Closed Loop Fuel Control

Possible Causes:



ECT sensor . Coolingsystem . Thermostat
 

Trouble Code: P0128



Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)

Possible Causes:



Thermostat
 
Cooling system
 
ECT sensor
 
ECM
 

 
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