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Makes 🢒 Chevrolet 🢒 1997 🢒 Express 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Diagnostic Trouble Code Identification

Diagnostic Trouble Code Identification for Chevrolet Express 1997

Diagnostic Trouble Code Identification 6.5L Diesel

Diagnostic Trouble Code (DTC) Identification Diagnostic Types

DTC

Description

DTC Type

Default Action

P0218

Transmission Fluid Overtemperature

D
    • DTC P0218 will be stored in the PCM history.
    • The PCM freezes shift adapts.

P0560

System Voltage Malfunction

D
    • DTC P0560 will be stored in PCM history.
    • The PCM inhibits TCC engagement.
    • The PCM freezes shift adapts.
    • The PCM turns off the PC Sol. Valve.
    • The PCM commands an immediate landing into 2nd gear.

P0711

Transmission Fluid Temperature (TFT) Sensor Circuit Range/Performance

B
    • DTC P0711 will be stored in the PCM history.
    • The PCM uses a TFT default value of 140°C (284°F).
    • The PCM freezes shift adapts.
    • The PCM illuminates the Malfunction Indicator Lamp (MIL).

P0712

Transmission Fluid Temperature Sensor Circuit -- Low Input

B
    • DTC P0712 will be stored in PCM history.
    • The PCM freezes shift adapts.
    • The PCM uses a TFT default value of 140°C (284°F).
    • The PCM illuminates the MIL.

P0713

Transmission Fluid Temperature Sensor Circuit -- High Input

B
    • DTC P0713 will be stored in PCM history.
    • The PCM freezes shift adapts.
    • The PCM uses a TFT default value of 140°C (284°F).
    • The PCM illuminates the MIL.

P0716

Input/Turbine Speed Sensor Circuit -- Range/Performance

B
    • DTC P0716 will be stored in PCM history.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure
    • The PCM illuminates the MIL.

P0717

Input/Turbine Speed Sensor Circuit -- No Signal

B
    • DTC P0717 will be stored in PCM history.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure.
    • The PCM illuminates the MIL.

P0719

Brake Switch Circuit Stuck On -- Low Input

D

DTC P0719 will be stored in PCM history.

P0722

Output Speed Sensor -- Low Input

B
    • DTC P0722 will be stored in the PCM history.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure.
    • The PCM calculates OSS from ISS.
    • The PCM illuminates the MIL.

P0723

Output Speed Sensor Intermittent

B
    • DTC P0723 will be stored in the PCM history.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure.
    • The PCM calculates OSS from ISS.
    • The PCM illuminates the MIL.

P0724

Brake Switch Circuit Stuck Off -- High Input

D
    • DTC P0724 will be stored in VCM history.
    • Apply TCC if APP is greater than 4% and the vehicle speed is greater than 30 mph.

P0741

Torque Converter Clutch (TCC) Stuck Off

B
    • DTC P0741 will be stored in PCM history.
    • The PCM inhibits TCC engagement.
    • The PCM inhibits fourth gear engagement.
    • The PCM illuminates the MIL.

P0742

Torque Converter Clutch (TCC) Stuck On

B
    • DTC P0742 will be stored in PCM history.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure.
    • The PCM illuminates the MIL.

P0748

Pressure Control Solenoid (PC Sol. Valve) -- Electrical

D
    • DTC P0748 will be stored in PCM history.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure by disabling the PC Sol. Valve.

P0751

"A" 1-2 Shift Solenoid Performance (1-2 SS)

B
    • DTC P0751 will be stored in PCM history.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure.
    • The PCM illuminates the MIL.

P0753

"A" 1-2 Shift Solenoid (1-2 SS) -- Electrical

A
    • DTC P0753 will be stored in PCM history.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure.
    • The PCM illuminates the MIL.

P0756

"B" 2-3 Shift Solenoid Valve (2-3 SS Valve) -- Performance

A
    • DTC P0756 will be stored in PCM history.
    • The PCM commands an immediate landing into second gear.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure.
    • The PCM illuminates the MIL.

P0758

"B" 1-2 Shift Solenoid Valve (1-2 SS Valve) -- Electrical

A
    • DTC P0758 will be stored in the PCM history
    • The PCM commands an immediate landing to second gear.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure.
    • The PCM illuminates the MIL.

P1810

Automatic Transmission Fluid Pressure Manual Valve Position Switch (TFP Val. Position Sw.)

B
    • DTC P1810 will be stored in PCM history.
    • The PCM freezes shift adapts.
    • The PCM assumes a D4 shift pattern.
    • The PCM commands maximum line pressure.
    • The PCM illuminates the MIL.

P1811

Maximum Adapt Long Shift

D
    • DTC P1811 will be stored in PCM history.
    • The PCM freezes shift adapts.
    • The PCM commands maximum line pressure.

P1860

Torque Converter Clutch Pulse Width Modulation (TCC PWM) Electrical

A
    • DTC P1860 will be stored in PCM history
    • The PCM inhibits TCC engagement.
    • The PCM inhibits fourth gear engagement.
    • The PCM freezes shift adapts.
    • The PCM illuminates the MIL.

P1870

Transmission Component Slipping

B
    • DTC P1870 will be stored in PCM history.
    • The PCM commands maximum line pressure.
    • The PCM inhibits TCC engagement.
    • The PCM inhibits fourth gear engagement.
    • The PCM freezes shift adapts.
    • The PCM illuminates the MIL.

P1871

Undefined gear ratio

D
    • DTC P1871 will be stored in PCM history.
    • The PCM commands maximum line pressure.
    • The PCM freezes shift adapts.

DTC Types:

Diagnostic Trouble Code Identification 4.3L, 5.7L, and 7.4L Gas

Diagnostic Trouble Code (DTC) Identification Diagnostic Types

DTC

Description

DTC Type

Default Action

P0218

Transmission Fluid Overtemperature

D
    • DTC P0218 will be stored in the VCM history.
    • The VCM freezes shift adapts.

P0502

Output Shaft Speed (OSS) Sensor -- Low Input

D / B
    • DTC P0502 will be stored in the VCM history.
    • The VCM freezes shift adapts.
    • The VCM commands maximum line pressure
    • The VCM defaults a calculated OSS from the A/T ISS Sensor output.
    • The VCM illuminates the MIL for California emissions.

P0560

System Voltage Malfunction

D
    • DTC P0560 will be stored in VCM history
    • The VCM freezes shift adapts.
    • The VCM commands an immediate landing to second gear.
    • The VCM turns off all transmission output devices

P0711

Automatic Transmission Fluid Temperature (TFT) Sensor Circuit Range/Performance

D / B
    • DTC P0711 will be stored in the VCM history.
    • The VCM freezes shift adapts.
    • The VCM defaults the TFT to 140°C
        (284°F).
    • The VCM illuminates the MIL for California emissions.

P0712

Transmission Fluid Temperature Sensor Circuit -- Low Input

D / B
    • DTC P0712 will be stored in VCM history
    • The VCM freezes shift adapts
    • The VCM defaults TFT to 140°C (284°F) for shift scheduling (hot mode pattern)
    • The VCM illuminates the MIL for California emissions.

P0713

Transmission Fluid Temperature Sensor Circuit -- High Input

D / B
    • DTC P0713 will be stored in VCM history.
    • The VCM freezes shift adapts.
    • The VCM defaults TFT to 140°C (284°F) for shift scheduling (hot mode pattern)
    • The VCM illuminates the MIL for California emissions.

P0716

Input/Turbine Speed Sensor Circuit -- Range/Performance

D / B
    • DTC P0716 will be stored in VCM history.
    • The VCM freezes shift adapts.
    • The VCM commands drive 2 line pressure
    • The VCM illuminates the MIL for California emissions.

P0717

Input/Turbine Speed Sensor Circuit -- No Signal

D / B
    • DTC P0717 will be stored in VCM history.
    • The VCM freezes shift adapts.
    • The VCM commands Drive 2 line pressure.
    • The VCM illuminates the MIL for California emissions.

P0719

Brake Switch Circuit Stuck On -- Low Input

D / B
    • DTC P0719 will be stored in VCM history.
    • The VCM freezes shift adapts.
    • The VCM inhibits fourth gear engagement
    • The VCM illuminates the MIL for California emissions.

P0724

Brake Switch Circuit Stuck Off -- High Input

D

DTC P0724 will be stored in VCM history.

P0730

Undefined Gear Ratio

D
    • DTC P0730 will be stored in VCM history
    • The VCM commands maximum line pressure.
    • The VCM freezes shift adapts.

P0741

Torque Converter Clutch (TCC) Circuit Stuck Off

D / B
    • DTC P0741 will be stored in VCM history.
    • The VCM inhibits TCC engagement.
    • The VCM inhibits fourth gear engagement.
    • The VCM illuminates the MIL for California emissions.

P0742

Torque Converter Clutch (TCC) Stuck On

D / B
    • DTC P0742 will be stored in VCM history.
    • The VCM freezes shift adapts.
    • The VCM commands Drive 2 line pressure.
    • The VCM illuminates the MIL for California emissions.

P0748

Pressure Control Solenoid Valve (PC Sol. Valve) -- Electrical

D
    • DTC P0748 will be stored in VCM history.
    • The VCM freezes shift adapts.
    • The VCM disables the PC Sol. Valve.

P0751

1-2 Shift Solenoid Valve (1-2 SS Valve) -- Performance

D / B
    • DTC P0751 will be stored in VCM history.
    • The VCM freezes shift adapts.
    • The VCM commands maximum line pressure.
    • The VCM illuminates the MIL for California emissions.

P0753

1-2 Shift Solenoid Valve (1-2 SS Valve) -- Electrical

D/A
    • DTC P0753 will be stored in VCM history.
    • The VCM freezes shift adapts.
    • The VCM maximum line pressure.
    • The VCM illuminates the MIL for California emissions.

P0756

2-3 Shift Solenoid Valve (2-3 SS Valve) -- Performance

D / A
    • DTC P0756 will be stored in VCM history.
    • The VCM freezes shift adapts.
    • The VCM commands maximum line pressure.
    • The VCM commands an immediate landing to second gear.
    • The VCM illuminates the MIL for California emissions.

P0758

1-2 Shift Solenoid Valve (1-2 SS Valve) -- Electrical

D / A
    • DTC P0758 will be stored in VCM history
    • The VCM freezes shift adapts.
    • The VCM commands maximum line pressure.
    • The VCM commands an immediate landing to second gear.
    • The VCM illuminates the MIL for California emissions.

P1810

Automatic Transmission Fluid Pressure Manual Valve Position Switch (TFP Val. Position Sw.)

D / B
    • DTC P1810 will be stored in VCM history.
    • The VCM freezes shift adapts.
    • The VCM assumes D4 shift pattern.
    • The VCM commands maximum line pressure.
    • The VCM forces TCC apply when fourth gear is commanded.
    • The VCM illuminates the MIL for California emissions.

P1860

Torque Converter Clutch Pulse Width Modulation Solenoid Valve (TCC PWM Sol. Valve)

D / A
    • DTC P1860 will be stored in VCM history
    • The VCM inhibit s TCC engagement.
    • The VCM inhibits fourth gear engagement.
    • The VCM illuminates the MIL for California emissions.

P1870

Transmission Component Slipping

D / B
    • DTC P1870 will be stored in VCM history.
    • The VCM commands maximum line pressure.
    • The VCM inhibits TCC engagement.
    • The VCM inhibits fourth gear engagement.
    • The VCM freezes shift adapts.
    • The VCM illuminates the MIL for California emissions.

DTC Types: