LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2004 >> Corolla LE, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (SFI) - Diagnostics >> Problem Symptoms Table
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Problem Symptoms Table

When the malfunction code is not confirmed in the diagnostic trouble code check and the problem still can not be confirmed in the basic inspection, proceed to this problem symptoms tables and troubleshoot according to the numbered order given below.

PROBLEM SYMPTOMS TABLE - ENGINE CONTROL SYSTEM

Symptom Suspect Area
Engine does not crank (Does not start)
  1. Starter and starter relay
  2. Neutral start switch circuit(1)
No initial combustion (Does not start)
  1. ECM power source circuit
  2. Ignition coil (w/Igniter) circuit
  3. Fuel pump control circuit
  4. Injector
No complete combustion (Does not start)
  1. Fuel pump control circuit
  2. Ignition coil (w/Igniter) circuit
  3. Injector
Engine cranks normally but difficult to start
  1. Starter signal circuit
  2. ISC valve circuit
  3. Fuel pump control circuit
  4. Ignition coil (w/Igniter)
  5. Spark plug
  6. Compression
  7. Injector
Difficult to start with cold engine
  1. Starter signal circuit
  2. ISC valve circuit
  3. Fuel pump control circuit
  4. Injector
  5. Ignition coil (w/Igniter)
  6. Spark plug
Difficult to start with hot engine
  1. Starter signal circuit
  2. ISC valve circuit
  3. Fuel pump control circuit
  4. Injector
  5. Ignition coil (w/Igniter)
  6. Spark plug
Incorrect first idle (Poor idling)
  1. ISC valve circuit
High engine idle speed (Poor idling)
  1. ISC valve circuit
  2. ECM power source circuit
  3. Neutral start switch circuit(1)
Low engine idle speed (Poor idling)
  1. ISC valve circuit
  2. Neutral start switch circuit(1)
  3. Fuel pump control circuit
  4. Injector
Rough idling (Poor idling)
  1. ISC valve circuit
  2. Injector
  3. Ignition coil (w/Igniter) circuit
  4. Compression
  5. Fuel pump control circuit
Hunting (Poor idling)
  1. ISC valve circuit
  2. ECM power source circuit
  3. Fuel pump control circuit
Hesitation/Poor acceleration (Poor drivability)
  1. Injector
  2. Fuel pump control circuit
  3. Ignition coil (w/Igniter) circuit
  4. A/T faulty*
Muffler explosion, after fire (Poor drivability)
  1. Ignition coil (w/Igniter)
  2. Spark plug
  3. Injector
Surging (Poor drivability)
  1. Fuel pump control circuit
  2. Spark plug
  3. Injector
Engine stall (Soon after starting)
  1. Fuel pump control circuit
  2. ISC valve circuit
Engine stall (After accelerator pedal released)
  1. Injector
  2. ISC valve circuit
  3. ECM
Engine stall (When shifting N to D)
  1. Neutral start switch circuit*
  2. ISC valve circuit
(1) A/T only
DTC Reference Table

DTC Description
DTC P0010  CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1)
DTC P0011  CAMSHAFT POSITION "A" -TIMING OVER-ADVANCED OR SYSTEM PERFORMANCE (BANK 1)
DTC P0012  CAMSHAFT POSITION "A" -TIMING OVER-RETARDED (BANK 1)
DTC P0016  CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR A)
DTC P0031  OXYGEN SENSOR HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 1)
DTC P0032  OXYGEN SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1)
DTC P0037  OXYGEN SENSOR HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 2)
DTC P0038  OXYGEN SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 2)
DTC P0100  MASS OR VOLUME AIR FLOW CIRCUIT
DTC P0102  MASS OR VOLUME AIR FLOW CIRCUIT LOW INPUT
DTC P0103  MASS OR VOLUME AIR FLOW CIRCUIT HIGH INPUT
DTC P0101  MASS OR VOLUME AIR FLOW CIRCUIT RANGE/PERFORMANCE PROBLEM
DTC P0110  INTAKE AIR TEMPERATURE CIRCUIT
DTC P0112  INTAKE AIR TEMPERATURE CIRCUIT LOW INPUT
DTC P0113  INTAKE AIR TEMPERATURE CIRCUIT HIGH INPUT
DTC P0115  ENGINE COOLANT TEMPERATURE CIRCUIT; ; DTC P0118: ENGINE COOLANT TEMPERATURE CIRCUIT HIGH INPUT
DTC P0117  ENGINE COOLANT TEMPERATURE CIRCUIT LOW INPUT
DTC P0118  ENGINE COOLANT TEMPERATURE CIRCUIT HIGH INPUT
DTC P0116  ENGINE COOLANT TEMP. CIRCUIT RANGE/PERFORMANCE PROBLEM
DTC P0120  THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT
DTC P0122  THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT
DTC P0123  THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT
DTC P0121  THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE PROBLEM
DTC P0125  INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL
DTC P0128  COOLANT THERMOSTAT (COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE)
DTC P0130  OXYGEN SENSOR CIRCUIT MALFUNCTION (BANK 1 SENSOR 1)
DTC P2195  OXYGEN SENSOR SIGNAL STUCK LEAN (BANK 1 SENSOR 1)
DTC P2196  OXYGEN SENSOR SIGNAL STUCK RICH (BANK 1 SENSOR 1)
DTC P0133  OXYGEN SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 1)
DTC P0134  OXYGEN SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 1 SENSOR 1)
DTC P0136  OXYGEN SENSOR CIRCUIT MALFUNCTION (BANK 1 SENSOR 2)
DTC P0171  SYSTEM TOO LEAN (BANK 1) DTC P0172: SYSTEM TOO RICH (BANK 1)
DTC P0300  RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED
DTC P0301  CYLINDER 1 MISFIRE DETECTED
DTC P0302  CYLINDER 2 MISFIRE DETECTED
DTC P0303  CYLINDER 3 MISFIRE DETECTED
DTC P0304  CYLINDER 4 MISFIRE DETECTED
DTC P0325  KNOCK SENSOR 1 CIRCUIT (BANK 1 OR SINGLE SENSOR)
DTC P0327  KNOCK SENSOR 1 CIRCUIT LOW INPUT (BANK 1 OR SINGLE SENSOR)
DTC P0328  KNOCK SENSOR 1 CIRCUIT HIGH INPUT (BANK 1 OR SINGLE SENSOR)
DTC P0335  CRANKSHAFT POSITION SENSOR "A" CIRCUIT
DTC P0339  CRANKSHAFT POSITION SENSOR "A" CIRCUIT INTERMITTENT
DTC P0340  CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 1 OR SINGLE SENSOR)
DTC P0341  CAMSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE (BANK 1 OR SINGLE SENSOR)
DTC P0351  IGNITION COIL "A" PRIMARY/SECONDARY CIRCUIT
DTC P0352  IGNITION COIL "B" PRIMARY/SECONDARY CIRCUIT
DTC P0353  IGNITION COIL "C" PRIMARY/SECONDARY CIRCUIT
DTC P0354  IGNITION COIL "D" PRIMARY/SECONDARY CIRCUIT
DTC P0420  CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1)
DTC P0441  EVAPORATIVE EMISSION CONTROL SYSTEM INCORRECT PURGE FLOW
DTC P0446  EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL CIRCUIT
DTC P0442  EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (SMALL LEAK)
DTC P0456  EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (VERY SMALL LEAK)
DTC P0451  EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR RANGE/PERFORMANCE
DTC P0452  EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR/SWITCH LOW INPUT
DTC P0453  EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR/SWITCH HIGH INPUT
DTC P0500  VEHICLE SPEED SENSOR "A"
DTC P0505  IDLE AIR CONTROL SYSTEM,
DTC P0511  IDLE AIR CONTROL CIRCUIT
DTC P0560  SYSTEM VOLTAGE
DTC P0606  ECM/PCM PROCESSOR
DTC P0617  STARTER RELAY CIRCUIT HIGH