Toyota Celica, Corolla, ECHO & MR2 1999-05

1.8L L4 VIN R Std 2

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Trouble Code: P1335



Crankshaft Position Sensor Circuit Malfunction

Possible Causes:



CKP sensor (+) circuit is open or shorted to ground
 
CKP sensor (-) circuit is open or shorted to ground
 
CKP sensor (+), (-) circuit is shorted to VREF or system power
 
CKP sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1500



Starter Signal Circuit Malfunction

Possible Causes:



Engine starter signal circuit is open or shorted to ground
 
Engine starter signal circuit is shorted to system power (B+)
 
Starter has failed
 
PCM has failed
 

Trouble Code: P1600



PCM Battery Backup Circuit Malfunction

Possible Causes:



Battery backup circuit is open (check EFI fuse and fuse link)
 
Battery terminals are corroded or loose
 
PCM has failed
 

Trouble Code: P1780



Park/Neutral Position Switch Circuit Malfunction

Possible Causes:



P/N switch is shorted to ground or wiring harness is shorted
 
P/N switch is out-of-adjustment, damaged or has failed
 
PCM has failed
 

Trouble Code: P0101



Mass Airflow Sensor Signal Range/Performance

Possible Causes:



MAF sensor signal circuit is open, shorted to ground or power
 
MAF sensor is contaminated, damaged or it has failed
 
PCM has failed
 

Trouble Code: P0120



TP Sensor or Switch 'A' Circuit Malfunction

Possible Causes:



VTA sensor signal circuit is open or shorted to ground
 
VTA sensor ground circuit is open
 
VTA power circuit (VREF) is open
 
TP sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0130



HO2S-11 (Bank 1 Sensor 1) Circuit Malfunction

Possible Causes:



HO2S signal circuit is open between the sensor and the PCM
 
HO2S signal circuit is shorted to sensor ground or to VREF
 
HO2S is damaged, contaminated or it has failed
 

Trouble Code: P0136



HO2S-12 (Bank 1 Sensor 2) Circuit Malfunction

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S signal circuit shorted to VREF or system power (B+)
 
HO2S is damaged, contaminated or it has failed
 

Trouble Code: P0171



Fuel System Too Lean (Bank 1)

Possible Causes:



A/FS or HO2S is contaminated, deteriorated or it has failed
 
Air leaks after the MAF sensor, or in the EGR or PCV system
 
Base engine "mechanical" fault affecting one or more cylinders
 
Exhaust leaks located in front of the A/FS or HO2S location
 
Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)
 
Fuel delivery system supplying too little fuel during cruise or idle periods (e.g., faulty fuel pump or dirty, restricted fuel filter)
 
Fuel injector (one or more) dirty or pressure regulator has failed
 
Vehicle driven low on fuel or until it ran out of fuel
 

Trouble Code: P0172



Fuel System Too Rich (Bank 1)

Possible Causes:



A/FS or HO2S is contaminated, deteriorated or it has failed
 
Base engine "mechanical" fault affecting one or more cylinders
 
EVAP system component has failed or canister fuel saturated
 
Exhaust leaks located in front of the A/FS or HO2S location
 
Fuel control sensor is out of calibration (i.e., ECT, IAT or MAF)
 
Fuel delivery system supplying too much fuel during cruise or idle periods (e.g., faulty fuel pump, or faulty pressure regulator)
 
Fuel injector(s) is leaking or stuck partiAlly open (one or more)
 

Trouble Code: P0300



Multiple Cylinder Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects two or more cylinders
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
Fuel delivery component fault that affects two or more cylinders (e.g., contaminated, dirty or sticking fuel injectors)
 
Ignition system fault (coil or plug) that affects several cylinders
 
Mass airflow meter is contaminated, or its signal is out of range
 

Trouble Code: P0301



Cylinder 1 Misfire Detected

Possible Causes:



Base engine mechanical fault that affects only Cylinder 1
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
Fuel component fault that affects only Cylinder 1 (a contaminated or sticking injector)
 
Ignition system problem (coil or plug) that affects Cylinder 1
 

Trouble Code: P0303



Cylinder 3 Misfire Detected

Possible Causes:



Base engine mechanical fault that affects only Cylinder 3
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
Fuel component fault that affects only Cylinder 3 (a contaminated or sticking injector)
 
Ignition system problem (coil or plug) that affects Cylinder 3
 

Trouble Code: P0402



Excessive EGR Flow Detected

Possible Causes:



EGR gas temperature sensor circuit open or shorted to ground
 
EGR gas temperature sensor is damaged or has failed
 
EGR Vacuum Switching Valve (VSV) is damaged or has failed
 
EGR valve stuck partiAlly or EGR valve stuck fully open
 
EGR VSV control circuit is open or shorted to system power
 
PCM has failed
 

Trouble Code: P0440



EVAP Control System Large Leak (0.080") Detected

Possible Causes:



Charcoal canister is clogged, loaded with fuel or with moisture
 
Fuel filler cap missing, loose (not tightened) or the wrong part
 
Fuel tank over-fill check valve cracked or damaged
 
Fuel tank seal leaking, fuel tank cracked or damaged/leaking
 
Fuel vapor hoses/tubes blocked or restricted, or fuel vapor control valve tube or fuel vapor vent valve assembly blocked
 
Vacuum hose or tubing cracked, damaged or disconnected
 
Vapor Pressure sensor incorrectly instAlled
 
PCM has failed
 

Trouble Code: P0442



EVAP System SmAll Leak (0.040") Detected

Possible Causes:



Canister Purge valve is damaged, leaking or has failed
 
Charcoal canister is loaded with fuel or moisture
 
Fuel filler cap loose, cross-threaded, incorrect part or damaged
 
Fuel tank is cracked (leaking), or a leak exists in the 'O' ring
 
Fuel tank pressure sensor is damaged or has failed
 
Fuel vapor line(s), fuel pipes or hoses damaged or leaking
 
PCM has failed
 

Trouble Code: P0500



Vehicle Speed Sensor Circuit Malfunction

Possible Causes:



VSS signal circuit is open between the meter and the PCM
 
VSS signal circuit shorted to ground between meter and PCM
 
VSS No. 1 is damaged or has failed
 
Combination Meter is damaged or has failed
 
PCM has failed
 

Trouble Code: P0505



Idle Control System Malfunction

Possible Causes:



Air Induction system leaks (check for intake manifold leaks)
 
Air leaks in the PCV system (at the valve or its related hoses)
 
Throttle body assembly is damaged or has failed
 
PCM has failed
 

Trouble Code: P1133



A/F Sensor-11 (Bank 1 Sensor 1) Slow Response

Possible Causes:



A/F sensor signal circuit or ground circuit is open
 
A/F sensor power circuit is open
 
A/F sensor is contaminated, damaged or has failed
 
Intake air leaks, exhaust manifold leaks or PCV system leaks
 
MAF sensor out of calibration (it may be dirty or contaminated)
 
PCM has failed
 

Trouble Code: P1300



Igniter No. 1 Circuit Malfunction

Possible Causes:



IGT or IGF1 signal circuit is open between the igniter and PCM
 
IGT or IGF1 signal circuit is shorted to ground
 
Igniter is damaged or has failed
 
PCM has failed
 

Trouble Code: P1305



Igniter No. 2 Circuit Malfunction

Possible Causes:



IGT or IGF2 signal circuit is open between the igniter and PCM
 
IGT or IGF2 signal circuit is shorted to ground
 
Igniter is damaged or has failed
 
PCM has failed
 

Trouble Code: P1310



Igniter No. 3 Circuit Malfunction

Possible Causes:



IGT or IGF3 signal circuit is open between the igniter and PCM
 
IGT or IGF3 signal circuit is shorted to ground
 
Igniter is damaged or has failed
 
PCM has failed
 

Trouble Code: P1315



Igniter No. 4 Circuit Malfunction

Possible Causes:



IGT or IGF4 signal circuit is open between the igniter and PCM
 
IGT or IGF4 signal circuit is shorted to ground
 
Igniter is damaged or has failed
 
PCM has failed
 

Trouble Code: P1346



Variable Valve Timing, CMP Sensor Range/Performance

Possible Causes:



Worn timing belt (i.e., the belt may be skipping teeth)
 
PCM has failed
 

Trouble Code: P1349



Variable Valve Timing System (Bank 1)

Possible Causes:



Oil control valve is damaged or has failed
 
Valve timing is not correct
 
PCM has failed
 

Trouble Code: P1520



Stop Light Switch Circuit Malfunction

Possible Causes:



Stop light switch is shorted to ground
 
Stop light switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P1645



Body ECU Malfunction

Possible Causes:



A/C ECU had failed (no communication fault)
 
Body Control ECU has failed (no communication fault)
 
Communication data bus circuit is open or shorted to ground
 
Communication data bus circuit is shorted to system power
 

Trouble Code: P1656



Oil Control Valve Circuit Malfunction (Bank 1)

Possible Causes:



OCV signal (+) circuit is open or shorted to ground
 
OCV signal (-) circuit is open or shorted to ground
 
OCV (valve) is damaged or has failed
 
PCM has failed
 

Trouble Code: P1690



Oil Control Valve Circuit Malfunction

Possible Causes:



OCV (valve) signal (+) or (-) circuit is open or shorted to ground
 
OCV (valve) signal circuit is shorted to VREF or system power
 
OCV (valve) is damaged or has failed
 
PCM had failed
 

Trouble Code: P1692



Oil Control Valve Circuit Malfunction (Open)

Possible Causes:



OCV (valve) connector is damaged or open
 
OCV (valve) control circuit is open
 
Oil control valve for the VVTL is damaged or has failed
 
Oil pressure switch for the VVTL is damaged or has failed
 
PCM has failed
 

Trouble Code: P1693



Oil Control Valve Circuit Malfunction (Closed)

Possible Causes:



OCV (valve) control circuit is shorted to ground
 
Oil control valve for the VVTL is damaged or has failed
 
Oil pressure switch for the VVTL is damaged or has failed
 
PCM has failed
 

Trouble Code: P0302



Cylinder 2 Misfire Detected

Possible Causes:



Base engine mechanical fault that affects only Cylinder 2
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
Fuel component fault that affects only Cylinder 2 (a contaminated or sticking injector)
 
Ignition system problem (coil or plug) that affects Cylinder 2
 

Trouble Code: P0304



Cylinder 4 Misfire Detected

Possible Causes:



Base engine mechanical fault that affects only Cylinder 4
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
Fuel component fault that affects only Cylinder 4 (a contaminated or sticking injector)
 
Ignition system problem (coil or plug) that affects Cylinder 4
 

 
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