Engine Controls - Tests W/Codes - 3.8L

• Introduction
• Self-Diagnostic System
  • Notes
  • Hard Failures
  • Intermittent Failures
  • Diagnostic Procedure
  • Retrieving Codes (Non-Scan)
  • Reading Trouble Codes
  • Trouble Code Definition
  • Hard Or Intermittent Trouble Code Determination
  • Clearing Trouble Codes
  • ECM/Pcm Location
  • Diagnostic Materials
    • Diagnostic Aids
    • Field Service Mode Check
  • Special Tools (Diagnostic)
  • Scan Tester Usage
  • Scan Data
• ECM/Pcm Code Charts
  • Notes
  • Code 13 - Open Oxygen Sensor Circuit
    • Notes
    • Diagnostic Aids
  • Code 14 - Coolant Temperature Sensor (Signal Voltage Low)
    • Notes
    • Diagnostic Aids
  • Code 15 - Coolant Temperature Sensor (Signal Voltage High)
    • Notes
    • Diagnostic Aids
  • Code 16 - System Voltage High/Low (3.8L)
    • Notes
    • Diagnostic Aids
  • Code 17 - Rpm Signal Problem (3.8L)
    • Notes
    • Diagnostic Aids
  • Code 18 - Cam/Crank Error (3.8L "C", "H" & "W" Bodies)
    • Notes
    • Diagnostic Aids
  • Code 21 - Throttle Position Sensor (Signal Voltage High)
    • Notes
    • Diagnostic Aids
  • Code 22 - Throttle Position Sensor (Signal Voltage Low)
    • Notes
    • Diagnostic Aids
  • Code 23 - Mat Sensor (Signal Voltage High)
    • Notes
    • Diagnostic Aids
  • Code 24 - Vehicle Speed Sensor (3.8L "W" Body)
    • Notes
    • Diagnostic Aids
  • Code 24 - Vehicle Speed Sensor (3.8L "C", "E" & "H" Bodies)
  • Code 25 - Mat Sensor (Signal Voltage Low)
    • Notes
    • Diagnostic Aids
  • Code 26 - Quad-Driver "A" (3.8L "C" & "H" Bodies) (1 Of 3)
  • Code 26 - Quad-Driver "A" (3.8L "C" & "H" Bodies) (2 Of 3)
    • Notes
    • Diagnostic Aids
  • Code 26 - Quad-Driver "A" (3.8L "C" & "H" Bodies)(3 Of 3)
  • Code 26 - Quad-Driver Error (3.8L "E" Body)(1 Of 3)
  • Code 26 - Quad-Driver Error (3.8L "E" Body)(2 Of 3)
    • Notes
    • Diagnostic Aids
  • Code 26 - Quad-Driver Error (3.8L "E" Body)(3 Of 3)
  • Code 26 - Quad-Driver "A" Error (3.8L "W" Body) (1 Of 4)
  • Code 26 - Quad-Driver "A" Error (3.8L "W" Body)(2 Of 4)
    • Notes
    • Diagnostic Aids
  • Code 26 - Quad-Driver "A" Error (3.8L "W" Body)(3 Of 4)
    • Notes
    • Diagnostic Aids
  • Code 26 - Quad-Driver "A" Error (3.8L "W" Body)(4 Of 4)
  • Code 31 - Park/Neutral Switch Circuit
  • Code 34 - MAF Sensor (Signal Voltage Low)
    • Notes
    • Diagnostic Aids
    • Poor Connections
    • Harness
    • Intermittents
  • Code 35 - IAC Idle Speed Error Without Tech 1
    • Notes
    • Diagnostic Aids
    • System Too Lean
    • System Too Rich
    • Throttle Body
    • IAC Valve Connections
    • PCV Valve
  • Code 35 - IAC Idle Speed Error Using Tech I
    • Notes
    • Diagnostic Aids
    • System Too Lean
    • System Too Rich
    • Throttle Body
    • IAC Valve Connections
    • PCV Valve
  • Code 36 - Shift Problem (3.8L "C" & "H" Bodies)
  • Code 36 - Shift Problem (3.8L "E" & "W" Bodies)
    • Notes
    • Diagnostic Aids
  • Code 38 - Brake Switch
    • Notes
    • Diagnostic Aids
  • Code 39 - TCC Circuit W/O Tech 1 (3.8L W/4T60 Trans)
    • Notes
    • Diagnostic Aids
  • Code 39 - TCC Circuit Using Tech 1 (3.8L W/4T60 Trans)
    • Notes
    • Diagnostic Aids
  • Code 41 - Cam Sensor Circuit (3.8L "C", "E" & "H" Bodies)
    • Notes
    • Diagnostic Aids
    • Poor Connection
    • Intermittents
  • Code 41 - Cam Sensor Circuit (Type II, "C", "E", "H" & "W" Body)
    • Notes
    • Diagnostic Aids
    • Poor Connection
    • Intermittents
  • Code 42 - Est Circuit Open Or Grounded
    • Notes
    • Diagnostic Aids
  • Code 43 - ESC Error (Without ESC Module)
    • Notes
    • Diagnostic Aids
  • Code 44 - Lean Exhaust Indication
    • Notes
    • Diagnostic Aids
    • O2 Sensor Wire
    • Fuel Contamination
    • Fuel Pressure
    • Exhaust Leaks
    • Misfire Or Stall
  • Code 45 - Rich Exhaust Indication
    • Notes
    • Diagnostic Aids
    • Fuel Pressure High
    • Ignition Ground
    • Evaporative Fuel Canister
    • MAP Sensor
    • TPS
    • O2 Sensor Contamination
    • EGR Problem
  • Code 48 - Misfire Diagnosis
    • Notes
    • 3.8L
    • Ignition System Checks
    • Fuel System Checks
    • Basic Engine Checks
  • Code 51 - Faulty Prom/Mem-Cal
  • Code 52 - Faulty Cal-PAK
  • Codes 53, 54 & 55 - EGR Fault (3.8L (VIN L) Except "E" Body)
    • Notes
    • Diagnostic Aids
  • Codes 54 & 55 - EGR Fault (3.8L (VIN 1) "C" & "H" Bodies)
    • Notes
    • Diagnostic Aids
  • Code 55 - ECM Error (Except 3.8L (VIN 1))
  • Code 56 - Quad-Driver Error (3.8L Except "E" Body)(1 Of 2)
    • Notes
    • Quad-Driver Related Symptoms
    • Diagnostic Aids
  • Code 56 - Quad-Driver Error (3.8L Except "E" Body)(2 Of 2)
  • Code 57 - Boost Control Problem (3.8L (VIN 1))
  • Code 58 - Pass-Key Fuel Enable Circuit (3.8L Except "W" Body)
    • Notes
    • Pass-Key Diagnosis
  • Code 61 - Cruise Vent Solenoid (3.8L)
  • Code 62 - Cruise Vacuum Solenoid (3.8L)
  • Code 63 - Cruise System Problem (3.8L Except "E" Body)
    • Notes
    • Diagnostic Aids
  • Code 65 - Cruise Servo Position (3.8L)
  • Code 66 - Low A/C Refrigerant Charge (3.8L Except "E" Body (W/O Digital Display))
  • Code 66 - Low A/C Refrigerant Charge (3.8L "C" & "H" Bodies (W/Digital Display))
  • Code 67 - Cruise Engage Switches (3.8L Except "W" Body)
  • Code 67 - Cruise Switches (3.8L (VIN L) "W" Body)
  • Code 68 - Cruise System Problem (Using Tech 1) (3.8L)
    • Notes
    • Diagnostic Aids
  • Code 69 - A/C Head Pressure Switch (3.8L "C" & "H" Bodies)
  • Code 69 - A/C Head Pressure Switch (3.8L "W" Body)
  • Code 85 - Prom Error & Code 87 - EEPROM Error
• Summary