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6•8 Emissions control systems Code Meaning Action 000 Ready for test - 010 Command/separator code Depress accelerator pedal fully, then release 020 Command code Depress brake pedal fully, then release 10 Cylinder No 1 low During cylinder balance test 20 Cylinder No 2 low During cylinder balance test 30 Cylinder No 3 low During cylinder balance test 40 Cylinder No 4 low During cylinder balance test 90 Cylinder balance test successful - 111 No faults found - 112 to 114 Intake air temperature sensor Check component (Section 4 of this Chapter) 116 to 118 Coolant temperature sensor - normal If fault still exists on reaching normal operating temperature, check operating temperature not reached component (Chapter 3) 121 to 125 Throttle potentiometer Check component (Section 4 of this Chapter) 129 Incorrect response from air mass Repeat test 136, 137 Oxygen sensor Check component (Section 4 of this Chapter) 139 Oxygen sensor Check component (Section 4 of this Chapter) 144 Oxygen sensor Check component (Section 4 of this Chapter) 157 to 159 Air mass meter Check component (Section 4 of this Chapter) 167 Incorrect response from throttle Repeat test 171 Oxygen sensor Check component (Section 4 of this Chapter) 172 Oxygen sensor - mixture too weak Check component (Section 4 of this Chapter) 173 Oxygen sensor - mixture too rich Check component (Section 4 of this Chapter) 174, 175 Oxygen sensor Check component (Section 4 of this Chapter) 176 Oxygen sensor - mixture too weak Check component (Section 4 of this Chapter) 177 Oxygen sensor - mixture too rich Check component (Section 4 of this Chapter) 178 Oxygen sensor Check component (Section 4 of this Chapter) 179 Fuel system - mixture too weak Check EGR valve (Section 6 of this Chapter) 181 Fuel system - mixture too rich Check EGR valve (Section 6 of this Chapter) 182 Idle mixture too weak Check idle speed control valve (Chapter 4) 183 Idle mixture too rich If mixture OK, check fuel system (see below) 184, 185 Air mass meter Check component (Section 4 of this Chapter) 186 Injector opening time (pulse width) too long Carry out system test (see below) 187 Injector opening time (pulse width) too short Carry out system test (see below) 188 Oxygen sensor - mixture too weak Check component (Section 4 of this Chapter) 189 Oxygen sensor - mixture too rich Check component (Section 4 of this Chapter) 191 Idle mixture too weak Check EGR valve (Section 6 of this Chapter) and idle speed control valve 192 Idle mixture too rich Check EGR valve (Section 6 of this Chapter) and idle speed control valve 194, 195 Oxygen sensor Check component (Section 4 of this Chapter) 211 No ignition signal to ECU Carry out system test (see below) 212 Tachometer circuit Carry out system test (see below) 213 No ignition signal from ECU Carry out system test (see below) 214 Camshaft position sensor Check component (Section 4 of this Chapter) 215 to 217 Ignition coil Carry out system test (see below) 218, 222 Tachometer circuit Carry out system test (see below) 226 ECU/ignition module pulse Carry out system test (see below) 227 Crankshaft speed/position sensor Check component (Chapter 5) 228 Ignition module/ignition coil winding 1 Carry out system test (see below) 229 Ignition module/ignition coil winding 2 Carry out system test (see below) 231 Ignition module/ignition coil winding 3 Carry out system test (see below) 232 Ignition coil primary windings Carry out system test (see below) 233 Ignition module Carry out system test (see below) 234 to 237 Ignition coil primary windings Carry out system test (see below) 238 Ignition module/ignition coil primary windings Carry out system test (see below) 239 No ignition signal to ECU on cranking Carry out system test (see below) 241 Incorrect response from ECU and/or Repeat test 243 Ignition coil failure Carry out system test (see below) 311 to 316 Pulse-air system Carry out system test (see below) 326 EGR system exhaust gas pressure Check component (Section 6 of this Chapter) |