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Diagnostic Trouble Code Identification: Notes

NOTE: When connecting test equipment, disconnect Engine Control Module (ECM) connector "D" first. When reconnecting connectors, connect connector "D" last. See ECM CONNECTOR IDENTIFICATION .

Use DTC identification to identify possible cause, see DIAGNOSTIC TROUBLE CODE LIST . Proceed to indicated area under TEST STEP/REMEDY column. Before proceeding with diagnostic testing, see HOW TO READ DIAGNOSTIC INFORMATION . Some diagnostic information is identified by chassis/model number. See MODEL IDENTIFICATION . To further understand DTC diagnosis and/or diagnose intermittent failures, see DTC DESCRIPTION . If vehicle is experiencing a communication failure (no communication at all), perform FUEL INJECTION SYSTEM TESTS , IGNITION SYSTEM TESTS , ELECTRONIC ACCELERATOR TESTS , and CRUISE CONTROL TESTS  entirely.

NOTE: DTC IDENTIFICATION FOR CYLINDER SHUTOFF only applies to CL500 equipped with optional cylinder shutoff. See CYLINDER SHUTOFF TESTS .
DIAGNOSTIC TROUBLE CODE LIST

DTC Definition Test Step/Remedy
P0100 MAF Circuit Malfunction 4, Fuel Injection System Test (Steps 3.0-4.0) 
P0105
Only USA vehicles with cylinder shutoff
MAP Circuit Malfunction 6, see Fuel Injection System Test (Step 6.0) 
P0110 IAT Circuit Malfunction 5, see FUEL INJECTION SYSTEM TEST (STEPS 5.0 & 5.1) 
P0115 ECT Circuit Malfunction 8, see FUEL INJECTION SYSTEM TEST (STEPS 8.0 & 8.1) 
P0120 Throttle Position Circuit Malfunction 3, see ELECTRONIC ACCELERATOR TEST (STEPS 3.0 & 3.1) 
P0130 O2S-1 Circuit Malfunction 11, see Fuel Injection System Test (Steps 11.0-12.0) 
P0133 O2S-1 Circuit Slow Response 11, see Fuel Injection System Test (Steps 11.0-12.0) 
P0135 O2S-1 Heater Circuit Malfunction 13, see FUEL INJECTION SYSTEM TEST (STEPS 13.0 & 14.0) 
P0136
Only USA
O2S-2 Circuit Malfunction 15, see FUEL INJECTION SYSTEM TEST (STEPS 15.0 & 16.0) 
P0140 O2S-2 Heater Circuit Malfunction 11, see Fuel Injection System Test (Steps 11.0-12.0) 
P0141
Only USA
O2S-2 Heater Circuit Malfunction 17, see FUEL INJECTION SYSTEM TEST (STEPS 17.0 & 18.0) 
P0150 O2S-1 Circuit Malfunction 10, see Fuel Injection System Test (Steps 8.2-10.0) 
P0153 O2S-1 Circuit Slow Response 10, see Fuel Injection System Test (Steps 8.2-10.0) 
P0155 O2S-2 Circuit Malfunction 12, see Fuel Injection System Test (Steps 11.0-12.0) 
P0156
Only USA
O2S-2 Circuit Malfunction 14, see FUEL INJECTION SYSTEM TEST (STEPS 13.0 & 14.0) 
P0160 O2S Heater Circuit Malfunction 10, see Fuel Injection System Test (Steps 8.2-10.0) 
P0161
Only USA
O2S-2 Heater Circuit Malfunction 16, see FUEL INJECTION SYSTEM TEST (STEPS 15.0 & 16.0) 
P0170 Fuel Trim Malfunction Intake air leak, injectors, diaphragm pressure regulator, engine wear
P0173 Fuel Trim Malfunction Intake air leak, injectors, diaphragm pressure regulator, engine wear
P0201 Injector Circuit Malfunction Cyl. 1 18, see FUEL INJECTION SYSTEM TEST (STEPS 17.0 & 18.0) 
P0202 Injector Circuit Malfunction Cyl. 2 19, see Fuel Injection System Test (Step 19.0) 
P0203 Injector Circuit Malfunction Cyl. 3 20, see Fuel Injection System Test (Step 20.0) 
P0204 Injector Circuit Malfunction Cyl. 4 21, see Fuel Injection System Test (Step 21.0) 
P0205 Injector Circuit Malfunction Cyl. 5 22, see Fuel Injection System Test (Step 22.0) 
P0206 Injector Circuit Malfunction Cyl. 6 23, see Fuel Injection System Test (Step 23.0) 
P0207 Injector Circuit Malfunction Cyl. 7 24, see Fuel Injection System Test (Step 24.0) 
P0208 Injector Circuit Malfunction Cyl. 8 25, see Fuel Injection System Test (Step 25.0) 
P0300 Random Misfire Detected 13-21, see Ignition System Test (Steps 13.0-14.0)  - Ignition System Test (Step 21.0) 
1 & 2, see Fuel Injection System Test (Steps 1.0-1.2)  & Fuel Injection System Test (Steps 2.0-2.2) 
Compression pressure
P0301 Cylinder 1 Misfire Detected 13, see Ignition System Test (Steps 13.0-14.0) ; 21, see Ignition System Test (Step 21.0) 
1 & 2, see Fuel Injection System Test (Steps 1.0-1.2)  & Fuel Injection System Test (Steps 2.0-2.2) 
Compression pressure
P0302 Cylinder 2 Misfire Detected 14, see Ignition System Test (Steps 13.0-14.0) ; 21, see Ignition System Test (Step 21.0) 
1 & 2, see Fuel Injection System Test (Steps 1.0-1.2)  & Fuel Injection System Test (Steps 2.0-2.2) 
Compression pressure
P0303 Cylinder 3 Misfire Detected 15, see Ignition System Test (Steps 14.1-15.1) ; 21, see Ignition System Test (Step 21.0) 
1 & 2, see Fuel Injection System Test (Steps 1.0-1.2)  & Fuel Injection System Test (Steps 2.0-2.2) 
Compression pressure
P0304 Cylinder 4 Misfire Detected 16, see Ignition System Test (Steps 16.0-17.0) ; 21, see Ignition System Test (Step 21.0) 
1 & 2, see Fuel Injection System Test (Steps 1.0-1.2)  & Fuel Injection System Test (Steps 2.0-2.2) 
Compression pressure
P0305 Cylinder 5 Misfire Detected 17, see Ignition System Test (Steps 16.0-17.0) ; 21, see Ignition System Test (Step 21.0) 
1 & 2, see Fuel Injection System Test (Steps 1.0-1.2)  & Fuel Injection System Test (Steps 2.0-2.2) 
Compression pressure
P0306 Cylinder 6 Misfire Detected 18, see Ignition System Test (Steps 17.1-18.1) ; 21, see Ignition System Test (Step 21.0) 
1 & 2, see Fuel Injection System Test (Steps 1.0-1.2)  & Fuel Injection System Test (Steps 2.0-2.2) 
Compression pressure
P0307 Cylinder 7 Misfire Detected 19, see Ignition System Test (Steps 19.0-19.1) ; 21, see Ignition System Test (Step 21.0) 
1 & 2, see Fuel Injection System Test (Steps 1.0-1.2)  & Fuel Injection System Test (Steps 2.0-2.2) 
Compression pressure
P0308 Cylinder 8 Misfire Detected 20, see Ignition System Test (Steps 20.0-20.1) ; 21, see Ignition System Test (Step 21.0) 
1 & 2, see Fuel Injection System Test (Steps 1.0-1.2)  & Fuel Injection System Test (Steps 2.0-2.2) 
Compression pressure
P0325 Right KS 1 Circuit Malfunction Wiring, connector, A16g1
P0330 Left KS 2 Circuit Malfunction Wiring, connector, A16g2
P0335 CKP Sensor Circuit Malfunction 11, see IGNITION SYSTEM TEST (STEPS 11.0 & 11.1) 
P0341 CMP Sensor Circuit Range/Performance 12, see IGNITION SYSTEM TEST (STEPS 12.0 & 12.1) 
P0370 Angle Deviation Between Camshaft & Crankshaft Check basic adjustment of camshaft
P0400 Exhaust Gas Recirculation Flow Malfunction 29, see Fuel Injection System Test (Step 29.0) 
P0410
Only USA
Air Injection System Malfunction 26-28, see FUEL INJECTION SYSTEM TEST (STEPS 26.0 & 27.0)  & Fuel Injection System Test (Step 28.0) 
P0422 TWC (Right) Efficiency Below Threshold Replace Right TWC
P0432 TWC (Left) Efficiency Below Threshold Replace left TWC
P0440 EVAP System Malfunction 32 & 33, see FUEL INJECTION SYSTEM TEST (STEPS 32.0 & 33.0) 
P0441 EVAP System Malfunction (Leak) - Logic Chain 31, see FUEL INJECTION SYSTEM TEST (STEPS 30.0 & 31.0) ; 32, see FUEL INJECTION SYSTEM TEST (STEPS 32.0 & 33.0) 
P0442 EVAP System Leak Detected (Small Leak) 33, see FUEL INJECTION SYSTEM TEST (STEPS 32.0 & 33.0) 
P0443 EVAP System Purge Control Valve Circuit Malfunction 31, see FUEL INJECTION SYSTEM TEST (STEPS 30.0 & 31.0) 
P0446
Only USA
EVAP System Vent Control Malfunction

A. Activated charcoal canister shut-off valve (Y58/4)


34 & 35, see Fuel Injection System Test (Steps 34.0-35.1) 
B. End stage activated charcoal canister shut-off valve (Y58/4) within N3/10
N3/10
P0450
Only USA
EVAP System Leak Detected (Large Leak) A. Fuel tank pressure sensor (B4/3) electrical fault
35, see Fuel Injection System Test (Steps 34.0-35.1) 
B. Fuel tank pressure sensor (B4/3) electrical fluctuations
Charcoal canister plugged
P0455
Only USA
EVAP System Leak Detected (Large Leak) EVAP system, large leak
33, see FUEL INJECTION SYSTEM TEST (STEPS 32.0 & 33.0) 
Fuel tank pressure sensor (B4/3) (voltage supply)
35, see Fuel Injection System Test (Steps 34.0-35.1) 
P0460 Fuel Level Sensor Circuit Low Input Fill fuel tank
P0500 VSS Sensor Malfunction Test ASR/ESP. See TRACTION CONTROL in BRAKES
P0507 ISC RPM Higher Than Expected 1-3, see Electronic Accelerator Test (Steps 1.0-2.0)  & ELECTRONIC ACCELERATOR TEST (STEPS 3.0 & 3.1) 
P0560 System Voltage Malfunction 1 & 2, see Fuel Injection System Test (Steps 1.0-1.2)  & Fuel Injection System Test (Steps 2.0-2.2) 
P0565 Cruise Control Switch 1, see CRUISE CONTROL TESTS 
P0600 Serial Communication Link Malfunction 36, see Fuel Injection System Test (Steps 36.0-36.2) 
P0604 Internal Control Module Random Access Memory (RAM) Error N3/10
P0605 Internal Control Module Read Only Memory (ROM) Error N3/10
P0700 Transmission Control System Malfunction, Gear Unplausi, Transmission Leak, Command Sleeve Stuck In Pressure Pos. See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0702 Transmission Control System Electrical, Voltage Supply To Solenoid Valves See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0715 Input/Turbine Speed Sensor Circuit Malfunction, RPM Sensor Voltage Supply & Function See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0720 Output Speed Sensor Circuit Malfunction, CAN Fault Recognition See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0730 Incorrect Gear Ratio, Ratio Comparison Negative (Numerous) See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0740 Torque Converter Clutch Circuit Malfunction See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0743 Torque Converter Clutch Circuit Electrical See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0748 Pressure Control Solenoid Electrical, Pressure Control Valve Modulation Press., Pressure Control Valve Shift Pressure See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0753 Shift Solenoid A Electrical, 1-2/4-5 Solenoid Shift Valve See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0758 Shift Solenoid B Electrical, 2-3 Solenoid Shift Valve See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0763 Shift Solenoid C Electrical See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P0801 Engine/Climate Control Electric Cooling Fan Malfunction 38, see Fuel Injection System Test (Steps 38.0-40.0) 
P0802 Resonance Intake Manifold Switchover Valve Malfunction 30, see FUEL INJECTION SYSTEM TEST (STEPS 30.0 & 31.0) 
P0809 Angle Deviation Between Camshaft & Crankshaft Check basic adjustment of camshaft
P0811 CAN From Electronic Ignition Lock 36, see Fuel Injection System Test (Steps 36.0-36.2) 
P1031 O2 Sensor (G3/3, G3/4) Reversed Check proper connection of O2 sensors in ETM
P1177 Oil Sensor (level, temperature, quality) (B40) Oil temperature implausible 37, see FUEL INJECTION SYSTEM TEST (STEPS 37.0 & 31.1) 
P1178 Oil Sensor (level, temperature, quality) (B40) Oil level implausible 37, see FUEL INJECTION SYSTEM TEST (STEPS 37.0 & 31.1) 
P1179 Oil Sensor (level, temperature, quality) (B40) Oil quality implausible 37, see FUEL INJECTION SYSTEM TEST (STEPS 37.0 & 31.1) 
P1180 Oil Sensor (level, temperature, quality) (B40) Oil temperature too high 37, see FUEL INJECTION SYSTEM TEST (STEPS 37.0 & 31.1) 
P1181 Engine/Climate Control Electric Cooling Fan 38, see Fuel Injection System Test (Steps 38.0-40.0) 
P1185 Oil Sensor (level, temperature, quality) (B40) water in oil 37, see FUEL INJECTION SYSTEM TEST (STEPS 37.0 & 31.1) 
P1186 Fuel Safety Shut Off Recognized 3 & 4, see ELECTRONIC ACCELERATOR TEST (STEPS 3.0 & 3.1)  & ELECTRONIC ACCELERATOR TEST (STEPS 4.0 & 5.0) 
P1225 Resonance Intake Manifold Switchover Valve Malfunction 30, see FUEL INJECTION SYSTEM TEST (STEPS 30.0 & 31.0) 
P1233 EA/CC/ISC Actuator (M16/6) Icing Problem Actuator
P1386 Knock Sensor Control From ECM (N3/10) At End Stop Increased knock tendency due to bad fuel, carbon in combustion chamber or mechanical damage
P1400 EGR Valve Vacuum Transducer 29, see Fuel Injection System Test (Step 29.0) 
P1420
Only USA
AIR Pump Switchover Valve 27, see FUEL INJECTION SYSTEM TEST (STEPS 26.0 & 27.0) 
P1453
Only USA
AIR Relay Module, AIR Pump 26, see FUEL INJECTION SYSTEM TEST (STEPS 26.0 & 27.0) 
P1491 Refrigerant pressure in A/C system too high Check automatic A/C system
P1542 Pedal Value Sensor 1 & 2, see Electronic Accelerator Test (Steps 1.0-2.0) 
P1570 CAN Signal From DAS Control Module To Engine Control Module A. Start attempted with "locked" DAS
User Error
B. CAN signal from DAS control module (N54/1) to engine control module (N3/10) interrupted
Check operation of DAS
C. Engine control module (ME-SFI) and DAS control module are not compatible
Step 36, see Fuel Injection System Test (Steps 36.0-36.2) , check control modules and part no.
P1580 EA/CC/ISC Actuator (M16/1) 3 & 4, see ELECTRONIC ACCELERATOR TEST (STEPS 3.0 & 3.1)  & ELECTRONIC ACCELERATOR TEST (STEPS 4.0 & 5.0) 
P1584 Stop Lamp Switch Test ETS/ASR. See TRACTION CONTROL in BRAKES
P1603 CAN From EIS 36, see Fuel Injection System Test (Steps 36.0-36.2) 
P1605 - Test ETS/ASR. See TRACTION CONTROL in BRAKES
P1642 Engine Control Module Check engine control module for correct version code
P1644 Transmission version cannot be checked due to low voltage of transmission control module (N15/3) See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
P1681 Crash Signal Unplausible 40, see Fuel Injection System Test (Steps 38.0-40.0) 
P1747 CAN Signal From ETC A. CAN failure: Transmission protection malfunction from transmission control module (N15/3)
See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES
B. CAN failure: Instrument cluster
Test instrument cluster (A1)
P0520 Cylinder Shutoff Oil Pressure Sensor
Fault Code Description
See DTC P0520 Test 
P1183 Cylinder Shutoff Valve For Right Bank Of Cylinders (Y80), Fault Code Description See DTC P1183 & P1184 Test 
P1184 Cylinder Shutoff Valve For Left Bank Of Cylinders (Y81), Fault Code Description See DTC P1183 & P1184 Test 
P1355 Cylinder Shutoff Valve For Right Bank Of Cylinders (Y80), Fault Code Description See DTC P1355 & P1356 Test 
P1356 Cylinder Shutoff Valve For Left Bank Of Cylinders (Y81), Fault Code Description See DTC P1355 & P1356 Test 
P1357 Cylinder Shutoff ON: No. 2, 3, 5 Or 8 Cylinder Inlet Valve Still Being Activated, Fault Code Description See DTC P1357, P1358, P1359, P1360 & P1361 Test 
P1358 Cylinder Shutoff OFF: No. 5 Cylinder Outlet Valve Not Being Activated, Fault Code Description See DTC P1357, P1358, P1359, P1360 & P1361 Test 
P1359 Cylinder Shutoff OFF: No. 2 Cylinder Outlet Valve Not Being Activated, Fault Code Description See DTC P1357, P1358, P1359, P1360 & P1361 Test 
P1360 Cylinder Shutoff OFF: No. 3 Cylinder Outlet Valve Not Being Activated, Fault Code Description See DTC P1357, P1358, P1359, P1360 & P1361 Test 
P1361 Cylinder Shutoff OFF: No. 8 Cylinder Outlet Valve Not Being Activated, Fault Code Description See DTC P1357, P1358, P1359, P1360 & P1361 Test 
P1366 Exhaust Valve Changeover Valve, Fault Code Description See DTC P1366 Test 
P1380 A Cylinder Inlet Valve Is Not Being Activated With Cylinder Shutoff OFF, Fault Code Description See DTC P1380 Test 
P1666 Cylinder Shutoff Valve Opens With Cylinder Shutoff ON, Fault Code Description See DTC P1666 Test