This article is a list of possible Manufacturer DTC's. For information on how to diagnose and repair a particular DTC, please refer to a service manual specific to your vehicle.
DTC 01 General Sensor Fault
DTC 02 Instantaneous Battery Voltage Out of Range
DTC 03 Filtered Battery Voltage Out of Range
DTC 04 Compressor Relay Short to Ground/Open
DTC 05 Compressor Relay Short to Battery
DTC 06 Exhaust Valve Short to Ground/Open Circuit
DTC 07 Exhaust Valve Short to Battery
DTC 08 Warning Lamp Short to Ground/Open Circuit
DTC 09 Warning Lamp Short to Battery
DTC 10 Inside Air Temperature Sensor Voltage Low
DTC 10 Intake Accumulator Fault
DTC 11 Driver Seat Forward/Backward Motor Inop
DTC 11 Exhaust Accumulator Fault
DTC 11 Inside Air Temperature Sensor Open Circuit
DTC 11 Transponder Key Problem
DTC 12 Consecutive Intake Malfunction
DTC 12 Driver Seat Recliner Motor Inoperative
DTC 12 LH Air Outlet Sensor Voltage Low
DTC 12 Wrong Transponder Key
DTC 12 Diagnostic System Check (Escalade)
DTC 13 Driver Air Bag Deployment Loop Short to GND
DTC 13 Immobilizer Not Programmed
DTC 13 LH Air Outlet Sensor Open Circuit
DTC 14 Coolant Temp Voltage Low
DTC 14 Driver Pretens Deployment Loop Short to GND
DTC 14 No Transponder Key Programmed
DTC 14 RH Air Outlet Sensor Voltage Low
DTC 15 Driver Air Bag Deploy. Loop Short to V
DTC 15 RH Air Outlet Sensor Open Circuit
DTC 15 Vehicle Speed Signal Voltage Low
DTC 16 Driver Pretens Deploy Loop Short to Voltage
DTC 16 Driver Seat Front Height Motor Inoperative
DTC 16 Int Air Mix Door Mtr Volts Low/Open Circuit
DTC 16 Vehicle Speed Signal Voltage High
DTC 17 Driver Seat Rear Height Motor Inoperative
DTC 17 Interior Air Mix Door Motor Voltage High
DTC 17 No Engine Request Received
DTC 18 Driver Side Mirror Circuit
DTC 18 LH Air Mix Door Mtr Volts Low/Open Circuit
DTC 18 MIL Circuit
DTC 19 Inside Mirror Circuit
DTC 19 LH Air Mix Door Motor Voltage High
DTC 20 Passenger Side Mirror Circuit
DTC 20 RH Air Mix Door Mtr Volts Low/Open Circuit
DTC 21 Driver Seat Adjuster Switch Inoperative
DTC 21 No Speed Signal
DTC 21 RH Air Mix Door Motor Voltage High
DTC 21/31 Courtesy Lamps Feed Shorted to Ground (Escalade)
DTC 22 Floor Air Mix Dr Mtr Voltage Low/Open CKT
DTC 22 Solenoid Circuit Short to Ground/Open
DTC 22/32 Courtesy Lamps Return Shorted to Battery (Escalade)
DTC 23 Floor Air Mix Door Motor Voltage High
DTC 23 Pass. Air Bag Deployment Loop Short to GND
DTC 23 Power Steering Control Module Malfunction
DTC 23/33 RAP Feed Shorted to Ground or Battery (Escalade)
DTC 24 Def Air Mix Door Mtr Volts Low/Open Circuit
DTC 24 Pass. Pretens Deployment Loop Short to GND
DTC 24/34 Seatbelt Indicator Shorted to Ground or Battery (Escalade)
DTC 25 Defrost Air Mix Door Motor Voltage High
DTC 25 Pass. Air Bag Deploy. Loop Short to Voltage
DTC 25/35 Security Indicator Status (Escalade)
DTC 26 Pass. Pretens Deploy. Loop Short to Voltage
DTC 27 Blower Motor Voltage Low or Open Circuit
DTC 28 Air Circ. Valve Voltage Low or Open CKT
DTC 29 Air Circulation Valve Voltage High
DTC 30 Heating Cut-Off Valve Volts Low or Open CKT
DTC 31 Driver Air Bag Deploy. Loop Resistance High
DTC 31 Heating Cut-Off Valve Voltage High
DTC 32 Driver Air Bag Deploy. Loop Resistance Low
DTC 32 Rear Window Defog Signal Voltage Low
DTC 33 Pass. Air Bag Deploy. Loop Resistance High
DTC 33 Rear Window Defog Signal Voltage Open CKT
DTC 34 Pass. Air Bag Deploy. Loop Resistance Low
DTC 34 Rear Window Defogger Open Circuit
DTC 35 A/C Request Signal Voltage High
DTC 35 Driver Pretens Deploy. Loop Resistance High
DTC 36 A/C Request Signal Voltage Low
DTC 36 Driver Pretens Deploy. Loop Resistance Low
DTC 37 Heater and A/C Control Switch Stuck
DTC 37 Pass. Pretens Deploy. Loop Resistance High
DTC 38 Pass. Pretens Deploy. Loop Resistance Low
DTC 38 Solar/Twilight Sensor Supply Voltage Low
DTC 39 Solar/Twilight Sensor Supply Voltage High
DTC 40 Solar/Twilight Sensor GND Short to Voltage
DTC 41 Last Message Received Valid (Escalade)
DTC 42 Last Message Received Invalid (Escalade)
DTC 43 Last Message Received with Sumcheck Error (Escalade)
DTC 43 Warning Lamp Circuit Short to Voltage
DTC 44 Warning Lamp Circuit Open or Short to GND
DTC 44 Last Message Received with Encryption Error (Escalade)
DTC 45 Receiver Processing in 20 Second Lockout (Escalade)
DTC 50 Seat Adjuster Memory Module Malfunction
DTC 50, 51, or 55 Sunroof Actuator Malfunction
DTC 51 Replace Heater and A/C Control
DTC 51 Reprogram Cluster or Cluster Malfunction
DTC 52 Heater and A/C Control Not Programmed
DTC 52 Reprogram Cluster
DTC 52 SDM Not Configured
DTC 53 Configuration Mismatch
DTC 55 Internal SDM Failure
DTC 55 Replace Heater and A/C Control
DTC 55 Seat Adjuster Memory Module Malfunction
DTC 55 Theft Deterrent Module Malfunction
DTC 55 Begin Configuration Display (Escalade)
DTC 56 SDM Not Reusable
DTC 65 Passenger Air Bag Deployment Commanded
DTC 66 Driver Air Bag Deployment Commanded
DTC 67 Pretensioner Only Deployment Commanded
DTC 68 Driver Side Air Bag Deployment Commanded
DTC 69 Pass. Side Air Bag Deployment Commanded
DTC 71 Driver Side Impact Sensor Comms Invalid
DTC 73 Driver Side Impact Sensor Short to Voltage
DTC 74 Driver Side Impact Sensor Short to Ground
DTC 75 Driver Side Air Bag Short to Ground
DTC 76 Driver Side Air Bag Short to Voltage
DTC 77 Driver Side Air Bag Deploy Loop Resist High
DTC 78 Driver Side Air Bag Deploy Loop Resist. Low
DTC 81 Pass. Side Impact Sensor Comms Invalid
DTC 83 Pass. Side Impact Sensor Short to Voltage
DTC 84 Pass. Side Impact Sensor Short to Ground
DTC 85 Pass. Side Air Bag Short to Ground
DTC 86 Pass. Side Air Bag Short to Voltage
DTC 87 Pass. Side Air Bag Deploy. Loop Resist High
DTC 88 Pass. Side Air Bag Deploy. Loop Resist. Low
DTC 97 ONSTAR DCO Link Open or Short to Voltage
DTC 98 ONSTAR DCO Link Short to Ground
DTC 167 Fuel Gauge Voltage Low
DTC 168 Fuel Gauge Voltage High
DTC 169 Outside Temperature Sensor Voltage Low
DTC 171 Outside Temperature Sensor Open Circuit
