October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Engine Controls - Tests W/Codes Expand All (for easy ctrl-f) Collapse All Introduction Self-Diagnostic System Metro Code Charts Chart A-1, No Check Engine Light Chart A-2, Won't Flash Code 12 Code 13, Oxygen Sensor Circuit Open Circuit Code 14, Coolant Temperature Sensor (Cts) Circuit High Temperature Indicated Code 15, Coolant Temperature Sensor (Cts) Circuit Low Temperature Indicated Code 21, Throttle Switch Circuit (M/T Only) Both Idle Switch Wide Open Throttle Switch Indicated On Code 21, Throttle Position Sensor (TPS) Circuit (A/T Only) Signal Voltage High Code 22, Throttle Position Sensor (TPS) Circuit (A/T Only) Signal Voltage Low Code 23, Manifold Air Temperature (Mat) Sensor Circuit Low Temperature Indicated Code 24, Vehicle Speed Sensor Circuit Code 25, Manifold Air Temperature (Mat) Sensor Circuit High Temperature Indicated Code 31, Manifold Absolute Pressure (Map) Sensor Circuit Signal Voltage Low With High Vacuum Code 32, Manifold Absolute Pressure (Map) Sensor Circuit Signal Voltage High With Low Vacuum CODE 41, IGNITION SIGNAL CIRCUIT NO SIGNAL LSi CONVENTIONAL IGNITION SYSTEM Code 41, Ignition Signal Circuit No Signal ESA Ignition System Code 42, Crank Angle Sensor Circuit No Signal For 2 Seconds Code 51, Exhaust Gas RECIRCULATION (EGR) Circuit CALIFORNIA Only) Summary