Diagnostic Trouble Code Identification. Cadillac Concours 1997

For 1990-2009 cars

#### Diagnostic Trouble Code (DTC) Identification Diagnostic Types

DTC | Description | DTC Type* | Default Action
--- | --- | --- | ---

P0218

Transmission Fluid Overtemperature

C

• | DTC P0218 is stored in PCM history

• | IDLE ENGINE TRANSMISSION HOT message displays

P0502

Vehicle Speed Sensor Circuit-Low Input

B

• | DTC P0502 stores in PCM history

• | SERVICE ENGINE SOON, SPEED SENSOR FAULT displays

• | Default line pressure

• | Inhibit TCC

• | Disable cruise control

• | Disable upshift and steady state adapts

• | Calculate VSS from A/T ISS and commanded gear

P0503

Vehicle Speed Sensor Circuit-Intermittent

B

• | DTC P0503 is stored in PCM history

• | SERVICE ENGINE SOON, SPEED SENSOR FAULT displays

• | Default line pressure

• | Inhibit TCC

• | Disable cruise control

• | Disable upshift and steady state adapts

• | Calculate VSS from A/T ISS and commanded gear

P0711

Transmission Fluid Temperature Sensor Circuit-Range/Performance

B

• | DTC P0711 is stored in PCM history

• | If any engine coolant temperature sensor codes are set, then the transmission defaults to a temperature of 132°C (269°F)

• | If the engine coolant temperature is greater than 115°C (239°F), then the transmission will default to a temperature of 132°C (269°F). This will enable Transmission Hot Mode. The transmission remains in Hot Mode until the engine coolant temperature drops below 110°C (230°F). If the engine run time is less than 3 min, then the transmission defaults to the intake air temperature at ignition ON.

• | If the engine coolant temperature is between 45°-115°C (113°-239°F), then the transmission default temperature equals ECT - 10°C when the intake air temperature is less than 27°C (81°F) at ignition ON. If the intake air temperature is greater than 27°C (81°F) at ignition ON, then the transmission default temperature equals ECT + 10°C.

• | If the engine run time is greater than 3 minutes and the engine coolant temperature is less than 45°C (113°F), then the transmission default temperature is 12°C (54°F)

P0712

Transmission Fluid Temperature Sensor Circuit-Low Input

D

• | DTC P0712 is stored in PCM history

• | If any engine coolant temperature sensor codes are set, then the transmission defaults to a temperature of 132°C (269°F)

• | If the engine coolant temperature is greater than 115°C (239°F), then the transmission will default to a temperature of 132°C (269°F). This will enable Transmission Hot Mode. The transmission remains in Hot Mode until the engine coolant temperature drops below 110°C (230°F). If the engine run time is less than 3 min, then the transmission defaults to the intake air temperature at ignition ON.

• | If the engine coolant temperature is between 45°-115°C (113°-239°F), then the transmission default temperature equals ECT - 10°C when the intake air temperature is less than 27°C (81°F) at ignition ON. If the intake air temperature is greater than 27°C (81°F) at ignition ON, then the transmission default temperature equals ECT + 10°C.

• | If the engine run time is greater than 3 minutes and the engine coolant temperature is less than 45°C (113°F), then the transmission default temperature is 12°C (54°F)

P0713

Transmission Fluid Temperature Sensor Circuit-High Input

D

• | DTC P0713 is stored in PCM history

• | If any engine coolant temperature sensor codes are set, then the transmission defaults to a temperature of 132°C (269°F)

• | If the engine coolant temperature is greater than 115°C (239°F), then the transmission will default to a temperature of 132°C (269°F). This will enable Transmission Hot Mode. The transmission remains in Hot Mode until the engine coolant temperature drops below 110°C (230°F). If the engine run time is less than 3 min, then the transmission defaults to the intake air temperature at ignition ON.

• | If the engine coolant temperature is between 45°-115°C (113°-239°F), then the transmission default temperature equals ECT - 10°C when the intake air temperature is less than 27°C (81°F) at ignition ON. If the intake air temperature is greater than 27°C (81°F) at ignition ON, then the transmission default temperature equals ECT + 10°C.

• | If the engine run time is greater than 3 minutes and the engine coolant temperature is less than 45°C (113°F), then the transmission default temperature is 12°C (54°F)

P0716

Input Speed Sensor Circuit-Intermittent

B

• | DTC P0716 is stored in PCM history

• | SERVICE ENGINE SOON , SERVICE TRANSMISSION displays

• | Default line pressure

• | Inhibit TCC

• | Disable upshift, steady state and garage shift adapts

• | Calculate A/T ISS from VSS and commanded gear

P0717

Input Speed Sensor Circuit-Low Input

B

• | DTC P0717 is stored in PCM history

• | SERVICE ENGINE SOON, SERVICE TRANSMISSION displays

• | Default line pressure

• | Inhibit TCC

• | Disable upshift, steady state and garage shift adapts

• | Calculate A/T ISS from VSS and commanded gear

P0719

Brake Switch Circuit-Low Input

C

• | DTC P0719 is stored in PCM history

• | SERVICE ELECTRICAL SYSTEM displays

• | Disable garage shift adapts

• | Extended travel or brake lamp switch is used by the PCM

P0724

Brake Switch Circuit-High Input

C

• | DTC P0724 is stored in PCM history

• | SERVICE ELECTRICAL SYSTEM displays

• | Disable garage shift adapts

• | Extended travel or brake lamp switch is used by the PCM

P0730

Incorrect Gear Ratio

C

• | DTC P0730 is stored in PCM history

• | SERVICE TRANSMISSION displays

• | Maximum line pressure

• | Disable upshift, steady state and garage shift adapts

P0741

Torque Converter Clutch System-Stuck OFF

B

• | DTC P0741 is stored in PCM history

• | SERVICE ENGINE SOON displays

• | Inhibit TCC

• | Inhibit 4th gear in Hot Mode

P0742

Torque Converter Clutch System-Stuck ON

B

• | DTC P0742 is stored in PCM history

• | SERVICE ENGINE SOON, SERVICE TRANSMISSION displays

• | Inhibit TCC

• | Inhibit 4th gear in Hot Mode

P0748

Pressure Control Solenoid Circuit-Electrical

C

• | DTC P0748 is stored in PCM history

• | SERVICE TRANSMISSION displays

• | Maximum line pressure

• | Disable upshift, steady state and garage shift adapts

P0751

1-2 Shift Solenoid Valve-Performance

A

• | DTC P0751 is stored in PCM history

• | SERVICE ENGINE SOON, SERVICE TRANSMISSION displays

• | Default line pressure

• | Default to 2nd gear

• | Inhibit TCC

• | Disable steady state and garage shift adapts

P0753

1-2 Shift Solenoid Circuit Electrical

A

• | DTC P0753 is stored in PCM history

• | SERVICE ENGINE SOON, SERVICE TRANSMISSION displays

• | Default line pressure

• | Default to 2nd gear

• | Inhibit TCC

• | Disable steady state and garage shift adapts

P0756

2-3 Shift Solenoid Valve-Performance

A

• | DTC P0756 is stored in PCM history

• | SERVICE ENGINE SOON, SERVICE TRANSMISSION displays

• | Default line pressure

• | Default to 2nd gear

• | Inhibit TCC

• | Disable steady state and garage shift adapts

P0758

2-3 Shift Solenoid Circuit Electrical

A

• | DTC P0758 is stored in PCM history

• | SERVICE ENGINE SOON, SERVICE TRANSMISSION displays

• | Default line pressure

• | Default to 2nd gear

• | Inhibit TCC

• | Disable steady state and garage shift adapts

P1810

Transmission Fluid Pressure Manual Valve Position Switch Assembly Circuit Malfunction

B

• | DTC P1810 is stored in PCM history

• | SERVICE ENGINE SOON, SERVICE TRANSMISSION displays

• | Default line pressure

• | Inhibit TCC

• | Disable steady state and garage shift adapts

P1811

Maximum Adapt and Long Shift

C

• | DTC P1811 is stored in PCM history

• | SERVICE TRANSMISSION displays

• | Maximum line pressure

• | Disable upshift, steady state and garage shift adapts

P1814 | Torque Converter Overstress | D | DTC P1814 is stored in PCM history

P1860

Torque Converter Clutch Pulse Width Modulation Solenoid Circuit Electrical

A

• | DTC P1860 is stored in PCM history

• | SERVICE ENGINE SOON, SERVICE TRANSMISION displays

• | Inhibit TCC

• | Inhibit 4th gear in Hot mode

*DTC Types:

• | A-Emission-related, turns the MIL ON after the first failure.

• | B-Emission-related, turns the MIL ON after two consecutive trips with failure.

• | C-Non-emission-related, message displayed.

• | D-Non-emission-related, no lamps and no message.