P0700

• Transmission or check engine light comes on
• Harsh, delayed or clunky gear changes
• Transmission locked in one gear (limp mode)
• Loss of power on hills, fluctuating revs
• Transmission fluid temperature warning

• Old or low transmission fluid
• Shift solenoid failure
• Transmission input/output speed sensor problem
• Worn clutch/torque converter
• Blockage in the valve body

1. Read the transmission fault codes and shift data with OBD-II.
2. Check the transmission fluid level and condition — burnt-smelling or dirty fluid is a sign of serious wear.
3. Assess gear changes on a road test: harsh shifts, delays, slipping.
4. Watch the transmission input/output speed sensor signals in live data.
5. Assess clutch pedal feel (manual) or torque converter behaviour (automatic).

1. Change the transmission fluid and filter with fluid to the manufacturer's specification.
2. If a shift solenoid is faulty, replace it together with the valve body.
3. Clean the speed sensors or replace them if faulty.
4. If the torque converter slips, replace it (together with the transmission).
5. Run the transmission adaptation procedure to reset adaptive learning values.
6. After the repair, confirm all gear changes on a road test.

• Kia: TCU Request For MIL On

• P0701Transmission Control System Range/Performance
• P0702Transmission Control System Electrical
• P0703Brake Switch 'B' Circuit
• P0705Transmission Range Sensor Circuit Malfunction (PRNDL Input)
• P0706Transmission Range Sensor Circuit Range/Performance
• P0707Transmission Range Sensor Circuit Low

This page is general information; an exact diagnosis needs measurements and a technician’s check.