Damaged, chafed or shorted wiring to the solenoid, including a short to voltage or an open circuit; Corroded, loose or water-damaged connector at the solenoid or control unit; Faulty upshift/skip shift solenoid with an open or damaged internal winding; Low or unstable system voltage from a weak battery or a charging fault; Internal driver fault in the transmission or engine control unit; Outdated control unit software where the manufacturer has a known fix for this model.

P080D

Upshift/Skip Shift Solenoid Control Circuit High.

Generic
Powertrain
Generic code
Medium severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
8: AreaTransmission
0D: FaultThe specific fault in that area

What it means

P080D is the generic code for a fault in the control circuit of the upshift/skip shift solenoid, with the circuit reading high. The control unit commands the solenoid and monitors the circuit voltage. It has seen a voltage higher than expected, which points to a short to voltage, an open circuit or a fault in the driver or solenoid. How the solenoid is used (for example a skip shift gate on a manual gearbox) depends on the model and gearbox.

Symptoms

Malfunction indicator lamp or transmission warning lamp on
Skip shift or upshift function not working, or the shift gate stuck in one position
Difficulty selecting certain gears, particularly 2nd to 3rd or 1st to 4th depending on the application
Gearbox in a default or limp mode on some automatic or automated applications
Higher fuel consumption if the economy shift function is disabled

Possible causes

Damaged, chafed or shorted wiring to the solenoid, including a short to voltage or an open circuitlikely
Corroded, loose or water-damaged connector at the solenoid or control unitlikely
Faulty upshift/skip shift solenoid with an open or damaged internal windinglikely
Low or unstable system voltage from a weak battery or a charging faultpossible
Internal driver fault in the transmission or engine control unitrare
Outdated control unit software where the manufacturer has a known fix for this modelrare

How to diagnose

Read and record all stored and pending codes and the freeze frame data, then note any other transmission or voltage-related codes.
Check battery condition and charging voltage, as low or unstable voltage can set circuit faults.
Visually inspect the solenoid wiring and connectors for chafing, heat damage, corrosion, water ingress and bent or pushed-back pins.
Check the wiring diagram for the specific model, then test the solenoid supply and control circuit for a short to voltage or an open circuit.
Measure the solenoid winding resistance and compare it with the manufacturer's specification.
Operate the solenoid with a suitable bidirectional scan function, if supported, and check that it clicks and the circuit responds.
Check for any manufacturer service bulletins or software updates for the model and gearbox.
Clear the code and road test, then re-read to confirm the fault has not returned.

How to fix

Repair or replace damaged wiring, and secure it clear of heat and moving parts.
Clean, repair or replace corroded or damaged connectors and terminals.
Replace the upshift/skip shift solenoid if the resistance or operation is out of specification.
Restore correct system voltage by repairing the battery or charging system.
Replace or repair the control unit only after the wiring and solenoid are proven good, and apply any software update that the manufacturer lists for this fault.

Can I keep driving?

Medium severity

The car can usually be driven carefully for a short time, but gear selection or shift behaviour may be restricted. Get it diagnosed soon, and stop if the gearbox will not select gears properly or goes into limp mode.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.