P076D
Shift Solenoid H Electrical.
- Generic
- Powertrain
- Generic code
- Medium severity
How this code is built
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- 7
- AreaTransmission
- 6D
- FaultThe specific fault in that area
What it means
P076D is the generic code for a fault in the electrical circuit of shift solenoid H in the automatic transmission. The transmission control unit monitors the solenoid circuit and set the code when it saw a voltage or current that did not match its command, which points to an open circuit, short circuit or a failed solenoid coil. Which gear or function solenoid H controls depends on the transmission, so it varies by model.
Symptoms
- Gearbox warning light or malfunction indicator lamp on
- Gearbox stuck in one gear (limp mode) or limited to certain gears
- Harsh, delayed or flared gear changes
- Failure to select particular gears or no engagement of a gear
- Poor acceleration or higher fuel consumption
- Possible torque converter lock-up not working
Possible causes
- Damaged, chafed or corroded wiring between the transmission control unit and the solenoid (open circuit or short to earth or voltage)likely
- Poor connection or corrosion in the transmission internal harness connector or pluglikely
- Shift solenoid H coil failed with open or shorted windinglikely
- Contaminated or degraded transmission fluid causing debris or varnish to affect the solenoid or valve bodypossible
- Low or unstable system voltage from a weak battery or poor earth connectionspossible
- Fault in the transmission control unit driver circuit, or a software issue where the manufacturer has identified an outdated calibrationrare
How to diagnose
- Read all stored and pending codes and the freeze frame data, noting gear, temperature, speed and voltage when the code set
- Check for related codes, such as other solenoid, gear ratio or communication faults, and look up any manufacturer service bulletins for the model
- Check battery condition and charging voltage, and inspect the main earth connections
- Visually inspect the transmission wiring, connector and harness for chafing, fluid ingress, heat damage and corrosion
- Check the transmission fluid level, condition and smell, following the procedure for that model, as it differs between sealed and serviceable units
- Measure the solenoid coil resistance and compare with the manufacturer specification, which varies by transmission
- Test the wiring for continuity, short to earth and short to voltage between the solenoid connector and the control unit
- Clear the code and road test to see whether it returns, monitoring solenoid command and gear status in live data
How to fix
- Repair or replace damaged wiring and clean or replace corroded connectors or terminals
- Replace the internal transmission harness or connector if it is leaking fluid or faulty
- Replace the shift solenoid H, or the solenoid pack where it is not sold separately, then service the fluid and filter as specified
- Correct charging system or battery faults and repair poor earth connections
- Replace or reprogram the transmission control unit only after wiring and solenoid faults are ruled out, and apply any manufacturer software update if one is known to cover this fault
Can I keep driving?
The car can usually be driven carefully a short distance, but the gearbox may be in limp mode with limited gears. Get it checked soon, as continued driving with poor shifts can cause further transmission wear.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.