For 1990-2009 cars

## DTC P0751 L61

### Circuit Description

The 1-2 shift solenoid valve (1-2 SS Valve) is a normally open exhaust valve that in conjunction with the 2-3 shift solenoid valve (2-3 SS Valve), allows four different shifting combinations. The 1-2 SS Valve is attached to the control valve body, within the transaxle. The PCM monitors the actual gear ratio and compares the actual gear ratio with the commanded gear ratio.

### Conditions for Setting the DTC

DTC P0751 will set if two occurrences of either of the following cases occur:

A stuck ON or OFF 1-2 SS Valve, or a stuck ON or OFF 1-2 Shift Valve

• | Engine is running

• | Gear range is D4, D3, D2 or D1

• | Vehicle speed is greater than 8 km/h (5 mph)

• | TP Angle is greater than 8%

• | Engine torque greater than 10 ft-lbs

• | Trans. Fluid Temp. is between 21 and 130°C (68 and 266°F)

• | No TP Angle DTCs have set

### Diagnostic Aids

• | 1-2 shift solenoid valve - stuck On or Off.

• | 1-2 shift valve - solenoid is plugged

## DTC P0751 L81

### Circuit Description

The 1-2 shift solenoid valve (1-2 SS Valve) is a normally open exhaust valve that in conjunction with the 2-3 shift solenoid valve (2-3 SS Valve), allows four different shifting combinations. The 1-2 SS Valve is attached to the control valve body, within the transaxle. The TCM monitors the actual gear ratio and compares the actual gear ratio with the commanded gear ratio.

When the TCM detects an actual gear ratio that does not agree with the commanded gear, 2nd gear ratio in 1st and 3rd gear ratio in 4th, then DTC P0751 is set.

### Conditions for Setting the DTC

DTC P0751 will set if two occurrences of either of the following cases occur:

A stuck OFF 1-2 SS Valve, or a stuck OFF 1-2 Shift Valve

• | Engine is running

• | Gear range is D4, D3, D2 or D1

• | Vehicle speed is greater than 8 km/h (5 mph)

• | TP Angle is greater than 8%

• | Engine torque greater than 10 ft-lbs

• | Trans. Fluid Temp. is between 21 and 130°C (68 and 266°F)

• | No TP Angle DTCs have set

P0751 is a type B DTC.

### Diagnostic Aids

• | 1-2 shift solenoid valve - stuck Off

• | 1-2 shift valve - solenoid is leaking - stuck Off