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Engine Controls - Tests W/Codes - 5.0L Expand All (for easy ctrl-f) Collapse All Model Identification Introduction Self-Diagnostic System Trouble Code Charts Notes Code 13, Open Oxygen Sensor Circuit Code 14, Coolant Sensor Signal Voltage Low Code 15, Coolant Sensor Signal Voltage High Code 16, VSS Buffer Fault Code 21, TPS Signal Voltage High Code 22, TPS Signal Voltage Low Code 24, VSS - M/T Code 28, Transmission Range Pressure Switch Code 32, EGR Circuit Error BACKPRESSURE EGR With Solenoid "G" Series Code 32, EGR Circuit Error With EVRV Solenoid Code 32, EGR CKT Error - "C" & "K" Series W/ Linear EGR Code 33, Map Sensor Signal Voltage High Code 34, Map Sensor Signal Voltage Low Code 35, Idle Speed Error Code 36, Idle Speed Actuator Fault - A/T Codes 37/38, TCC Brake Switch On/Off Code 39, TCC Stuck Off - 4L80-E Transmission Code 42, Ignition Control Code 43, Knock Sensor Without Spark Module (Dual Sensors) Code 43, Knock Sensor Without Spark Module (Single Sensor) Code 43, Knock Sensor With Spark Control Module Code 44, Lean Exhaust Indication Code 45, Rich Exhaust Indication Code 51, Prom Error (Faulty Or Incorrect Prom) Code 52, Faulty CALPAK Code 52/53, System Voltage High Code 55, ECM/Pcm Error Code 54, Fuel Pump Circuit Code 58, Transmission Fluid Temperature High Code 59, Transmission Fluid Temperature Low Code 66, 3-2 Control Solenoid CKT Fault 4L60-E Transmission Code 67, TCC Solenoid Circuit Check - 4L60-E Transmission Code 68, Overdrive Ratio Error - 4L80-E Transmission Code 69, Torque Converter Clutch Stuck On 4L60-E Transmission Code 69, Torque Converter Clutch Stuck On 4L80-E Transmission Code 72, VSS Circuit Loss Trans Output Signal Code 73, Pressure Control Solenoid (Current Error) Code 74, Transmission Input Speed Error 4L80-E Transmission Code 75, System Voltage Low Code 79, Transmission Fluid Temperature High Code 81, Transmission 2-3 Error Code 82, Transmission 1-2 Error Code 83, TCC Solenoid Circuit Fault Code 85, Undefined Gear Ratio Code 86, Low Gear Ratio Error Code 87, High Gear Ratio Error Summary Wiring Diagrams