Codes

1997 Astro Cargo AWD ,,, Does anyone know what these codes are?

C0036

C0037

C0065

C0066

C0073

C0086

Thanks ,,,

If you're getting that many DTC's on yours, I'd look for a faulty ground.

Here's the DTC "C" code list:


DTC C0001 TCS Control Channel A Valve 1 (Subfault)
DTC C0002 TCS Control Channel A Valve 2 (Subfault)
DTC C0003 TCS Control Channel B Valve 1 (Subfault)
DTC C0004 TCS Control Channel B Valve 2 (Subfault)
DTC C0005 ISO/SAE reserved
DTC C0006 ISO/SAE reserved
DTC C0007 ISO/SAE reserved
DTC C0008 ISO/SAE reserved
DTC C0009 ISO/SAE reserved
DTC C000A ISO/SAE reserved
DTC C000B ISO/SAE reserved
DTC C000C ISO/SAE reserved
DTC C000D ISO/SAE reserved
DTC C000E ISO/SAE reserved
DTC C000F ISO/SAE reserved
DTC C0010 Left Front Inlet Control (Subfault)
DTC C0011 Left Front Outlet Control (Subfault)
DTC C0012 Left Front Hydraulic Release Too Long (Subfault)
DTC C0013 ISO/SAE reserved
DTC C0014 Right Front Inlet Control (Subfault)
DTC C0015 Right Front Outlet Control (Subfault)
DTC C0016 Right Front Hydraulic Release Too Long (Subfault)
DTC C0017 ISO/SAE reserved
DTC C0018 Left Rear Inlet Control (Subfault)
DTC C0019 Left Rear Outlet Control (Subfault)
DTC C001A Left Rear Hydraulic Release Too Long (Subfault)
DTC C001B ISO/SAE reserved
DTC C001C Right Rear Inlet Control (Subfault)
DTC C001D Right Rear Outlet Control (Subfault)
DTC C001E Right Rear Hydraulic Release Too Long (Subfault)
DTC C001F ISO/SAE reserved
DTC C0020 ABS Pump Motor Control (Subfault)
DTC C0021 Brake Booster Performance (Subfault)
DTC C0022 Brake Booster Solenoid (Subfault)
DTC C0023 Stop Lamp control (Subfault)
DTC C0024 ISO/SAE reserved
DTC C0025 ISO/SAE reserved
DTC C0026 ISO/SAE reserved
DTC C0027 ISO/SAE reserved
DTC C0028 ISO/SAE reserved
DTC C0029 ISO/SAE reserved
DTC C002A ISO/SAE reserved
DTC C002B ISO/SAE reserved
DTC C002C ISO/SAE reserved
DTC C002D ISO/SAE reserved
DTC C002E ISO/SAE reserved
DTC C002F ISO/SAE reserved
DTC C0030 Left Front Tone Wheel (Subfault)
DTC C0031 Left Front Wheel Speed Sensor (Subfault)
DTC C0032 Left Front Wheel Speed Sensor Supply (Subfault)
DTC C0033 Right Front Tone Wheel (Subfault)
DTC C0034 Right Front Wheel Speed Sensor (Subfault)
DTC C0035 Right Front Wheel Speed Sensor Supply (Subfault)
DTC C0036 Left Rear Tone Wheel (Subfault)
DTC C0037 Left Rear Wheel Speed Sensor (Subfault)
DTC C0038 Left Rear Wheel Speed Sensor Supply (Subfault)
DTC C0039 Right Rear Tone Wheel (Subfault)
DTC C003A Right Rear Wheel Speed Sensor (Subfault)
DTC C003B Right Rear Wheel Speed Sensor Supply (Subfault)
DTC C003C Rear Tone Wheel (Subfault)
DTC C003D Rear Wheel Speed Sensor (Subfault)
DTC C003E Rear Wheel Speed Sensor Supply (Subfault)
DTC C003F ISO/SAE reserved
DTC C0040 Brake Pedal Switch A (Subfault)
DTC C0041 Brake Pedal Switch B (Subfault)
DTC C0042 Brake Pedal Position Sensor Circuit A (Subfault)
DTC C0043 Brake Pedal Position Sensor Circuit B (Subfault)
DTC C0044 Brake Pressure Sensor A (Subfault)
DTC C0045 Brake Pressure Sensor B (Subfault)
DTC C0046 Brake Pressure Sensor A/B (Subfault)
DTC C0047 Brake Booster Pressure Sensor (Subfault)
DTC C0048 Brake Booster Travel Sensor (Subfault)
DTC C0049 Brake Fluid (Subfault)
DTC C004A Brake Lining Wear Sensor (Subfault)
DTC C004B ISO/SAE reserved
DTC C004C ISO/SAE reserved
DTC C004D ISO/SAE reserved
DTC C004E ISO/SAE reserved
DTC C004F ISO/SAE reserved
DTC C0050 ISO/SAE reserved
DTC C0051 Steering Wheel Position Sensor (Subfault)
DTC C0052 Steering Wheel Position Sensor Signal A (Subfault)
DTC C0053 Steering Wheel Position Sensor Signal B (Subfault)
DTC C0054 Steering Wheel Position Sensor Signal C (Subfault)
DTC C0055 Steering Wheel Position Sensor Signal D (Subfault)
DTC C0056 ISO/SAE reserved
DTC C0057 ISO/SAE reserved
DTC C0058 ISO/SAE reserved
DTC C0059 ISO/SAE reserved
DTC C005A ISO/SAE reserved
DTC C005B ISO/SAE reserved
DTC C005C ISO/SAE reserved
DTC C005D ISO/SAE reserved
DTC C005E ISO/SAE reserved
DTC C005F ISO/SAE reserved
DTC C0060 ISO/SAE reserved
DTC C0061 Lateral Acceleration Sensor (Subfault)
DTC C0062 Longitudinal Acceleration Sensor (Subfault)
DTC C0063 Yaw Rate Sensor (Subfault)
DTC C0064 Roll Rate Sensor
DTC C0065 ISO/SAE reserved
DTC C0066 ISO/SAE reserved
DTC C0067 ISO/SAE reserved
DTC C0068 ISO/SAE reserved
DTC C0069 Yaw Rate/Longitude Sensors (Subfault)
DTC C006A Multi-axis Acceleration Sensor (Subfault)
DTC C006B Stability System Active Too Long (Subfault)
DTC C006C Stability System
DTC C006D ISO/SAE reserved
DTC C006E ISO/SAE reserved
DTC C006F ISO/SAE reserved
DTC C0070 ISO/SAE reserved
DTC C0071 2/4 Wheel Drive Status Input (Subfault)
DTC C0072 Brake Temperature Too High (Subfault)
DTC C0073 Delivered Driving Torque (Subfault)
DTC C0074 Requested Driving Torque (Subfault)
DTC C0075 Extended Brake Pedal Travel, output to PCM (Subfault)
DTC C0076 PWM for Traction Control (Subfault)
DTC C0077 Low Tire Pressure (Subfault)
DTC C0078 Tire Diameter (Subfault)
DTC C0079 Variable Effort Steering (Subfault)
DTC C007A ISO/SAE reserved
DTC C007B ISO/SAE reserved
DTC C007C ISO/SAE reserved
DTC C007D ISO/SAE reserved
DTC C007E ISO/SAE reserved
DTC C007F ISO/SAE reserved
DTC C0080 ISO/SAE reserved
DTC C0081 ABS Malfunction Indicator (Subfault)
DTC C0082 Brake System Malfunction Indicator (Subfault)
DTC C0083 Tire Pressure Monitor Malfunction Indicator (Subfault)
DTC C0084 Traction Active Indicator (Subfault)
DTC C0085 Traction Disable Indicator (Subfault)
DTC C0086 Vehicle Dynamics Indicator (Subfault)
DTC C0087 ISO/SAE reserved
DTC C0088 ISO/SAE reserved
DTC C0089 TCS Disable Switch (Subfault)
DTC C008A TCS Mode Control (Subfault)
DTC C008B ISO/SAE reserved
DTC C008C ISO/SAE reserved
DTC C008D ISO/SAE reserved
DTC C008E ISO/SAE reserved
DTC C008F ISO/SAE reserved
DTC C0090 ISO/SAE reserved
DTC C0091 ISO/SAE reserved
DTC C0092 ISO/SAE reserved
DTC C0093 ISO/SAE reserved
DTC C0094 ISO/SAE reserved
DTC C0095 ISO/SAE reserved
DTC C0096 ISO/SAE reserved
DTC C0097 ISO/SAE reserved
DTC C0098 ISO/SAE reserved
DTC C0099 ISO/SAE reserved
DTC C009A ISO/SAE reserved
DTC C009B ISO/SAE reserved
DTC C009C ISO/SAE reserved
DTC C009D ISO/SAE reserved
DTC C009D ISO/SAE reserved
DTC C009E ISO/SAE reserved
DTC C009F ISO/SAE reserved
DTC C00A0 ISO/SAE reserved

I apologize for my ignorance but I have no idea what any of the codes mean. I can match up my numbers with your list but that's as far as it goes for me. Any help?

C0036 & C0037 are DTC's for the left rear wheel sensor. 97 Astro has only one sensor for the rear wheels and it doubles at the VSS (Vehicle Speed Sensor) and neither DTC applies to your vehicle.

C0065 & C0066 are not used, (reserved for future ABS systems).

C0073 & C0086 are computations that the EBCM makes to determine the duty cycle it applies to the solenoids.

I would look for a poor ground, a poor power connection, or possibly a faulty EBCM.

How strange is this? Everything appears to pertain to the ABS, The ABS that the old mechanic disabled on the van. The van is in the shop right now having the pan removed to inspect for damage. (different mechanic)