Ecd System - Diagnostic Trouble Code Chart

Lexus IS250 IS220d GSE20 ALE20 2AD-FHV ENGINE CONTROL SYSTEM


ECD SYSTEM - DIAGNOSTIC TROUBLE CODE CHART

  • HINT:
  • Parameters listed in the chart may not be exactly the same as your readings due to the type of instrument or other factors.
  • If a DTC is displayed, check the trouble area for the DTC listed in the table below. For details of each DTC, refer to the page given in the right column.
ECD SYSTEM:
DTC No.Detection ItemTrouble AreaMILMemorySee page
P0031 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1) 1. Open in A/F sensor heater circuit
2. A/F sensor heater
3. A/F relay
4. ECM		 Comes on DTC Stored
P0032 Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1) 1. Short in A/F sensor heater circuit
2. A/F sensor heater
3. A/F relay
4. ECM		 Comes on DTC Stored
P0045 Turbocharger / Supercharger Boost Control Solenoid Circuit / Open 1. VRV
2. Open or short in VRV circuit
3. ECM		 Comes on DTC Stored
P0069 MAP Sensor Too High or Too Low 1. ECM Comes on DTC Stored
P0087 Fuel Rail / System Pressure - Too Low 1. Open or short in fuel pressure sensor circuit
2. Fuel pressure sensor
3. ECM		 Comes on DTC Stored
P0088 Fuel Rail / System Pressure - Too High 1. Supply pump (suction control valve)
2. Common rail assembly (pressure discharge valve)
3. Short in supply pump (suction control valve) circuit
4. ECM		 Comes on DTC Stored
P0093 Fuel System Leak Detected - Large Leak 1. Fuel line between supply pump and common rail
2. Fuel line between common rail and each injector
3. Supply pump
4. Common rail
5. Injectors
6 .Pressure discharge valve
7. Open or short in EDU circuit (P0200 set simultaneously)
8. Open or short in injector circuit
9. EDU (P0200 set simultaneously)
10. ECM		 Comes on DTC Stored
P0095 Intake Air Temperature Sensor 2 Circuit 1. Open or short in diesel turbo IAT sensor circuit
2. Diesel turbo IAT sensor
3. ECM		 Comes on DTC Stored
P0097 Intake Air Temperature Sensor 2 Circuit Low 1. Open or short in diesel turbo IAT sensor circuit
2. Diesel turbo IAT sensor
3. ECM		 Comes on DTC Stored
P0098 Intake Air Temperature Sensor 2 Circuit High 1. Open or short in diesel turbo IAT sensor circuit
2. Diesel turbo IAT sensor
3. ECM		 Comes on DTC Stored
P0100 Mass or Volume Air Flow Circuit 1. Open or short in mass air flow meter circuit
2. Mass air flow meter
3. ECM		 Comes on DTC Stored
P0101 Mass or Volume Air Flow Circuit Range / Performance Problem 1. Mass air flow meter Comes on DTC Stored
P0102 Air Flow Meter Circuit Low Input 1. Open or short in mass air flow meter circuit
2. Mass air flow meter
3. ECM		 Comes on DTC Stored
P0103 Air Flow Meter Circuit High Input 1. Open or short in mass air flow meter circuit
2. Mass air flow meter
3. ECM		 Comes on DTC Stored
P0105 Manifold Absolute Pressure / Barometric Pressure Circuit 1. Open or short in manifold absolute pressure sensor circuit
2. Manifold absolute pressure sensor
3. Turbocharger assembly
4. EGR valve assembly
5. ECM		 Comes on DTC Stored
P0106 Manifold Absolute Pressure / Barometric Pressure Circuit Range / Performance Problem 1. Manifold absolute pressure sensor Comes on DTC Stored
P0107 Manifold Absolute Pressure / Barometric Pressure Circuit Low Input 1. Open or short in manifold absolute pressure sensor circuit
2. Manifold absolute pressure sensor
3. Turbocharger assembly
4. EGR valve assembly
5. ECM		 Comes on DTC Stored
P0108 Manifold Absolute Pressure / Barometric Pressure Circuit High Input 1. Open or short in manifold absolute pressure sensor circuit
2. Manifold absolute pressure sensor
3. Turbocharger assembly
4. EGR valve assembly
5. ECM		 Comes on DTC Stored
P0110 Intake Air Temperature Circuit 1. Open or short in IAT sensor circuit
2. IAT sensor
3. ECM		 Comes on DTC Stored
P0112 Intake Air Temperature Circuit Low Input 1. Open or short in IAT sensor circuit
2. IAT sensor
3. ECM		 Comes on DTC Stored
P0113 Intake Air Temperature Circuit High Input 1. Open or short in IAT sensor circuit
2. IAT sensor
3. ECM		 Comes on DTC Stored
P0115 Engine Coolant Temperature Circuit 1. Open or short in ECT sensor circuit
2. ECT sensor
3. ECM		 Comes on DTC Stored
P0116 Engine Coolant Temperature Circuit Range / Performance Problem 1. Engine coolant temperature sensor Comes on DTC Stored
P0117 Engine Coolant Temperature Circuit Low Input 1. Open or short in ECT sensor circuit
2. ECT sensor
3. ECM		 Comes on DTC Stored
P0118 Engine Coolant Temperature Circuit High Input 1. Open or short in ECT sensor circuit
2. ECT sensor
3. ECM		 Comes on DTC Stored
P0120 Throttle / Pedal Position Sensor / Switch "A" Circuit 1. Open or short in throttle valve position sensor circuit
2. Throttle position sensor
3. ECM		 Comes on DTC Stored
P0122 Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input 1. Throttle position sensor
2. Open or short in VLU circuit
3. Open in VC circuit
4. ECM		 Comes on DTC Stored
P0123 Throttle / Pedal Position Sensor / Switch "A" Circuit High Input 1. Throttle position sensor
2. Open in E2 circuit
3. Short in VC and VLU circuits
4. ECM		 Comes on DTC Stored
P0168 Fuel Temperature Too High 1. Fuel temperature sensor Comes on DTC Stored
P0180 Fuel Temperature Sensor "A" Circuit 1. Open or short in fuel temperature sensor circuit
2. Fuel temperature sensor
3. ECM		 Comes on DTC Stored
P0182 Fuel Temperature Sensor "A" Circuit Low Input 1. Open or short in fuel temperature sensor circuit
2. Fuel temperature sensor
3. ECM		 Comes on DTC Stored
P0183 Fuel Temperature Sensor "A" Circuit High Input 1. Open or short in fuel temperature sensor circuit
2. Fuel temperature sensor
3. ECM		 Comes on DTC Stored
P0190 Fuel Rail Pressure Sensor Circuit 1. Open or short in fuel pressure sensor circuit
2. Fuel pressure sensor
3. ECM		 Comes on DTC Stored
P0191 Fuel Rail Pressure Sensor Circuit Range / Performance 1. Fuel pressure sensor Comes on DTC Stored
P0192 Fuel Rail Pressure Sensor Circuit Low Input 1. Open or short in fuel pressure sensor circuit
2. Fuel pressure sensor
3. ECM		 Comes on DTC Stored
P0193 Fuel Rail Pressure Sensor Circuit High Input 1. Open or short in fuel pressure sensor circuit
2. Fuel pressure sensor
3. ECM		 Comes on DTC Stored
P0200 Injector Circuit / Open 1. Open or short in EDU circuit
2. Injector
3. EDU
4. ECM		 Comes on DTC Stored
P0234 Turbocharger / Supercharger Overboost Condition 1. E-VRV for turbocharger control
2. Open or short in VRV circuit
3. Turbocharger
4. Vacuum hose
5. EGR valve
6. ECM		 Comes on DTC Stored
P0299 Turbocharger / Supercharger Underboost 1. E-VRV for turbocharger control
2. Open or short in VRV circuit
3. Turbocharger
4. Vacuum hose
5. EGR valve
6. ECM		 Comes on DTC Stored
P0335 Crankshaft Position Sensor "A" Circuit 1. Open or short in crankshaft position sensor circuit
2. Crankshaft position sensor
3. Crankshaft position sensor plate No. 1
4. ECM		 Comes on DTC Stored
P0339 Crankshaft Position Sensor "A" Circuit Intermittent 1. Open or short in crankshaft position sensor circuit
2. Crankshaft position sensor
3. Crankshaft position sensor plate No. 1
4. ECM		 - DTC Stored
P0340 Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor) 1. Open or short in camshaft position sensor circuit
2. Camshaft position sensor
3. Timing sprocket
4. ECM		 Comes on DTC Stored
P0400 Exhaust Gas Recirculation Flow 1. EGR valve stuck
2. EGR valve does not move smoothly
3. Open or short in EGR circuit
4. Open or short in EGR valve position sensor circuit
5. EGR valve position sensor
6. ECM		 Comes on DTC Stored
P0405 Exhaust Gas Recirculation Sensor "A" Circuit Low 1. Open or short in EGR valve position sensor circuit
2. EGR valve position sensor
3. ECM		 Comes on DTC Stored
P0406 Exhaust Gas Recirculation Sensor "A" Circuit High 1. Open or short in EGR valve position sensor circuit
2. EGR valve position sensor
3. ECM		 Comes on DTC Stored
P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance 1. Throttle valve stuck
2. Throttle valve does not move smoothly
3. Open or short in throttle valve circuit
4. Open or short in throttle valve position sensor circuit
5. Throttle position sensor (built in diesel throttle body assembly)
6. ECM		 Comes on DTC Stored
P0500 Vehicle Speed Sensor "A" 1. Open or short in speed sensor circuit
2. Skid control ECU
3. Combination meter
4. ECM		 Comes on DTC Stored
P0504 Brake Switch "A" / "B" Correlation 1. Short in stop light switch signal circuit
2. Stop light switch
3. ECM		 - DTC Stored
P0516 Battery Temperature Sensor Circuit Low 1. Battery thermometer sensor
2. Short in battery thermometer sensor circuit
3. ECM		 Comes on DTC Stored
P0517 Battery Temperature Sensor Circuit High 1. Battery thermometer sensor
2. Open in battery thermometer sensor circuit
3. ECM		 Comes on DTC Stored
P0544 Exhaust GAS Temperature Sensor Circuit (Bank 1 Sensor 1) 1. Open or short in exhaust gas temperature sensor (upstream) circuit
2. Exhaust gas temperature sensor (upstream)
3. ECM		 Comes on DTC Stored
P0545 Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 1) 1. Open or short in exhaust gas temperature sensor (upstream) circuit
2. Exhaust gas temperature sensor (upstream)
3. ECM		 Comes on DTC Stored
P0546 Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 1) 1. Open or short in exhaust gas temperature sensor (upstream) circuit
2. Exhaust gas temperature sensor (upstream)
3. ECM		 Comes on DTC Stored
P0560 System Voltage 1. Open in back-up power source circuit
2. Low battery voltage
3. ECM		 Comes on DTC Stored
P0606 ECM / PCM Processor 1. ECM Comes on DTC Stored
P0607 Control Module Performance 1. ECM Comes on DTC Stored
P0617 Starter Relay Circuit High 1. Clutch start switch
2. Cranking holding function circuit
3. ECM		 Comes on DTC Stored
P0627 Fuel Pump Control Circuit / Open 1. Open or short in suction control valve circuit
2. Suction control valve
3. ECM		 Comes on DTC Stored
P1229 Fuel Pump System 1. Short in supply pump (suction control valve) circuit
2. Supply pump (suction control valve)
3. ECM		 Comes on DTC Stored
P1238 Injector Malfunction Main:
1. Injector
2. EDU (P0200 is set simultaneously)
3. Open or short in engine wire harness (P0200 is set simultaneously)
4. Connector connection (P0200 is set simultaneously)
5. Compression pressure
6. Valve clearance
Related:
1. Valve timing
2. ECM		 Comes on DTC Stored
P1251 Turbocharger / Supercharger Overboost Condition (Too High) 1. E-VRV for turbocharger control
2. Open or short in VRV circuit
3. Turbocharger
4. Vacuum hose
5. EGR valve
6. ECM		 Comes on DTC Stored
P1271 Fuel Regulator Circuit Malfunction (EDU Drive) 1. Open or short in pressure discharge valve circuit
2. Open or short in pressure discharge valve itself
3. EDU
4. ECM		 Comes on DTC Stored
P1272 Fuel Pressure Regulator Malfunction 1. Open or short in pressure discharge valve circuit (P1271 is set simultaneously)
2. Pressure discharge valve
3. Supply pump
4. ECM		 Comes on DTC Stored
P1386 Injector for Exhaust Fuel Addition Main:
1. Open or short in exhaust fuel addition injector circuit
2. Exhaust fuel addition injector
3. DPNR catalytic converter (Manifold converter sub-assembly)
Related:
1. Open in exhaust temperature sensor circuit
2. A/F sensor
3. Exhaust gas temperature sensor
4. Supply pump assembly
5. Mass air flow meter
6. Fuel leaks in exhaust fuel addition injector
7. Main injector
8. Cylinder compression pressure
9. Valve clearance
10. Valve timing
11. Air intake system has blockages
12. Air intake system has leakage
13. Exhaust system has blockages
14. Exhaust system has leakage
15. EGR system has blockages
16. EGR system has leakage
17. ECM		 Comes on DTC Stored
P1425 Differential Pressure Sensor Circuit 1. Open or short in differential pressure sensor circuit
2. Incorrect differential pressure sensor hose routing
3. Differential pressure sensor
4. ECM		 Comes on DTC Stored
P1426 Differential Pressure Sensor Installation Error 1. Incorrect differential pressure sensor hose piping
2. Differential pressure sensor vacuum hose is clogged
3. Blockage in vacuum transmitting pipe sub-assembly
4. Differential pressure sensor
5. ECM		 Comes on DTC Stored
P1427 Differential Pressure Sensor Circuit Low 1. Open or short in differential pressure sensor circuit
2. Incorrect differential pressure sensor hose routing
3. Differential pressure sensor
4. ECM		 Comes on DTC Stored
P1428 Differential Pressure Sensor Circuit High 1. Open or short in differential pressure sensor circuit
2. Incorrect differential pressure sensor hose routing
3. Differential pressure sensor
4. ECM		 Comes on DTC Stored
P1526 Fuel Route Switching Valve Relay Stuck ON 1. Short in fuel route switching valve circuit
2. FUEL PCV relay
3. ECM		 - DTC Stored
P1527 Fuel Route Switching Valve Relay Stuck OFF 1. Open or short in fuel route switching valve circuit
2. FUEL PCV relay
3. ECM		 - DTC Stored
P1550 Battery Current Sensor Circuit 1. Open or short in battery current sensor circuit
2. Battery current sensor
3. ECM		 - DTC Stored
P1551 Battery Current Sensor Circuit Low 1. Short in battery current sensor circuit
2. Battery current sensor
3. ECM		 - DTC Stored
P1552 Battery Current Sensor Circuit High 1. Open in battery current sensor circuit
2. Battery current sensor
3. ECM		 - DTC Stored
P1601 EEPROM Error - Injector Correction Value, DPNR Thermal Degradation Record 1. Injector compensation code
2. ECM		 - DTC Stored
P1602 Deterioration of Battery 1. Battery
2. ECM back-up power source circuit		 Comes on DTC Stored
P1611 IC Circuit Malfunction 1. ECM Comes on DTC Stored
P1625 Idle Signal Transmitter Circuit 1. Open or short in idle control circuit
2. ECM		 Comes on DTC Stored
P2002 Particulate Trap Efficiency Below Threshold (Bank1) 1. DPNR catalytic converter (Manifold converter sub-assembly)
2. Differential pressure sensor
3. Differential pressure sensor vacuum hose is clogged
4. Blockage in vacuum transmitting pipe sub-assembly
5. Exhaust gas temperature sensor
6. Fuel injector
7. Exhaust fuel addition injector
8. Trubocharger sub-assembly
9. Exhaust gas leaks in TOYOTA D-CAT
10. Mass air flow meter
11. ECM		 Comes on DTC Stored
P2031 Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2) 1. Open or short in exhaust gas temperature sensor (downstream) circuit
2. Exhaust gas temperature sensor (downstream)
3. ECM		 Comes on DTC Stored
P2032 Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2) 1. Open or short in exhaust gas temperature sensor (downstream) circuit
2. Exhaust gas temperature sensor (downstream)
3. ECM		 Comes on DTC Stored
P2033 Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2) 1. Open or short in exhaust gas temperature sensor (downstream) circuit
2. Exhaust gas temperature sensor (downstream)
3. ECM		 Comes on DTC Stored
P2047 Reductant Injector Circuit / Open (Bank 1 Unit 1) 1. Open in exhaust fuel addition injector circuit
2. Exhaust fuel addition injector
3. ECM		 Comes on DTC Stored
P2048 Short to GND in Reductant Injector Circuit (Bank 1) 1. Open in exhaust fuel addition injector circuit
2. Exhaust fuel addition injector
3. ECM		 Comes on DTC Stored
P2049 Short to B+ in Reductant Injector Circuit (Bank 1) 1. Open in exhaust fuel addition injector circuit
2. Exhaust fuel addition injector
3. ECM		 Comes on DTC Stored
P2120 Throttle / Pedal Position Sensor / Switch "D" Circuit 1. Accelerator pedal position sensor
2. Accelerator pedal
3. Accelerator pedal rod (arm) deformed
4. ECM		 Comes on DTC Stored
P2121 Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance 1. Accelerator pedal position sensor circuit
2. Accelerator pedal position sensor
3. ECM		 Comes on DTC Stored
P2122 Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input 1. Accelerator pedal position sensor
2. Open in VCPA circuit
3. VPA circuit open or ground short
4. Accelerator pedal
5. Accelerator pedal rod (arm) deformed
6. ECM		 Comes on DTC Stored
P2123 Throttle / Pedal Position Sensor / Switch "D" Circuit High Input 1. Accelerator pedal position sensor
2. Open in EPA circuit
3. Accelerator pedal
4. Accelerator pedal rod (arm) deformed
5. ECM		 Comes on DTC Stored
P2125 Throttle / Pedal Position Sensor / Switch "E" Circuit 1. Accelerator pedal position sensor
2. Accelerator pedal
3. Accelerator pedal rod (arm) deformed
4. ECM		 Comes on DTC Stored
P2127 Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input 1. Accelerator pedal position sensor
2. Open in VCP2 circuit
3. VPA2 circuit open or ground short
4. Accelerator pedal
5. Accelerator pedal rod (arm) deformed
6. ECM		 Comes on DTC Stored
P2128 Throttle / Pedal Position Sensor / Switch "E" Circuit High Input 1. Accelerator pedal position sensor
2. Open in EPA2 circuit
3. Accelerator pedal
4. Accelerator pedal rod (arm) deformed
5. ECM		 Comes on DTC Stored
P2138 Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation 1. Short in VPA and VPA2 circuits
2. Accelerator pedal position sensor
3. Accelerator pedal
4. Accelerator pedal rod (arm) deformed
5. ECM		 Comes on DTC Stored
P2226 Barometric Pressure Circuit 1. ECM Comes on DTC Stored
P2228 Barometric Pressure Circuit Low Input 1. ECM Comes on DTC Stored
P2229 Barometric Pressure Circuit High Input 1. ECM Comes on DTC Stored
P2237 Oxygen (A/F) Sensor Pumping Current Circuit / Open (Bank 1 Sensor 1) 1. ECM Comes on DTC Stored
P2238 Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1) 1. Open or short in A/F sensor circuit
2. A/F sensor
3. A/F sensor heater
4. A/F relay
5. A/F sensor heater and relay circuit
6. ECM		 Comes on DTC Stored
P2239 Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1) 1. Open or short in A/F sensor circuit
2. A/F sensor
3. A/F sensor heater
4. A/F relay
5. A/F sensor heater and relay circuit
6. ECM		 Comes on DTC Stored
P2252 Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1) 1. Open or short in A/F sensor circuit
2. A/F sensor
3. A/F sensor heater
4. A/F relay
5. A/F sensor heater and relay circuit
6. ECM		 Comes on DTC Stored
P2253 Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1) 1. Open or short in A/F sensor circuit
2. A/F sensor
3. A/F sensor heater
4. A/F relay
5. A/F sensor heater and relay circuit
6. ECM		 Comes on DTC Stored
U0155 Lost Communication with Instrument Panel Cluster Control Module (Combination Meter) 1. ECM
2. Gateway ECU
3. Combination meter circuit
4. Can communication circuit
5. Multiplex communication circuit		 - DTC Stored