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Engine Controls - Tests W/Codes - Gasoline Expand All (for easy ctrl-f) Collapse All Introduction Self-Diagnostic System Trouble Codes Code 13, Open Oxygen Sensor Circuit Code 14, Coolant Sensor Signal Voltage Low Code 15, Coolant Sensor Signal Voltage High Code 16, System Voltage High/Low 3.8L CODE 17, rpm signal problem 3.8l CODE 18, CAM/CRANK ERROR 3.8l Code 21, TPS Signal Voltage High Code 22, TPS Signal Voltage Low Code 24, Vehicle Speed Sensor (3.1L) Code 24, Vehicle Speed Sensor (VSS) 3.8L Code 26, Quad-Driver Circuit 3.8L (1 Of 3) Code 26, Quad-Driver Circuit 3.8L (2 Of 3) Code 26, Quad-Driver Circuit 3.8L (3 Of 3) Code 31, Park/Neutral Switch Circuit 3.8L Code 32, EGR System Error (3.1L) Code 33, Map Sensor Signal Voltage High Code 34, Map Sensor Signal Voltage Low Code 34, MAF Sensor Signal Voltage Low 3.8L Code 36, Shift Control Problem (3.8L) Code 38, Brake Switch Circuit (3.8L) Code 39, TCC Circuit (3.8L) Code 41, Cam Sensor Circuit (3.8L) Code 42, Electronic Spark Timing (3.1L) Code 42, Electronic Spark Timing (3.8L) Code 43, Electronic Spark Control (3.1L) Code 44, Lean Exhaust Indication Code 45, Rich Exhaust Indication Code 51, Faulty Prom/Mem-Cal Code 52, Faulty CALPAK (Except 2.5L) Code 55, ECM/Pcm Error (Except 2.5L) Code 54, Fuel Pump Circuit Code 56, Quad-Driver "B" Fault 3.8L (1 Of 2) Quad-Driver Related Symptoms Code 56, Quad-Driver "B" Fault 3.8L (2 Of 2) Code 61, Cruise Vent Solenoid 3.8L Code 62, Cruise Vacuum Solenoid 3.8L Code 63, Cruise System Problem 3.8L Code 65, Cruise Servo Position 3.8L Code 66, Low A/C Refrigerant Charge 3.8L Code 67, Cruise Engage Switches 3.8L Code 68, Cruise System Problem Using Tech 1 (3.8L) Code 69, A/C Head Pressure Switch 3.8L