Faulty ignition coil F with an internal short or failed driver stage; Damaged wiring to the coil control circuit, such as chafing or a short to ground; Corroded, loose or contaminated connector at the coil or engine control module; Missing or faulty coil power supply or earth feed, depending on the engine design; Worn spark plug or plug fault that overloads the coil; Faulty engine control module ignition driver.

P035E

Ignition F Control Signal Circuit Low.

Generic
Powertrain
Generic code
Medium severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
3: AreaIgnition system or misfire
5E: FaultThe specific fault in that area

What it means

P035E is a generic powertrain code meaning the engine control module has detected a low voltage or low signal state in the control circuit for ignition coil F, normally the coil for cylinder 6 on the usual firing layout. The module monitors the coil driver or trigger signal and sets the code when the circuit reads lower than expected, which points to a short to ground, a poor connection or a failed driver or coil.

Symptoms

Engine misfire, often with a flashing or steady check engine light
Rough idle and hesitation under load
Loss of power or poor acceleration
Hard starting or an extended cranking time
Poor fuel economy
Engine running on fewer cylinders in some cases

Possible causes

Faulty ignition coil F with an internal short or failed driver stagelikely
Damaged wiring to the coil control circuit, such as chafing or a short to groundlikely
Corroded, loose or contaminated connector at the coil or engine control modulepossible
Missing or faulty coil power supply or earth feed, depending on the engine designpossible
Worn spark plug or plug fault that overloads the coilpossible
Faulty engine control module ignition driverrare

How to diagnose

Read all stored and pending codes and record the freeze frame data, noting load, rpm and engine temperature when the fault set
Check for related misfire codes, particularly for the cylinder served by coil F, as the cylinder numbering depends on the engine layout and manufacturer
Visually inspect the coil F connector and wiring for chafing, heat damage, moisture and corrosion
Check the coil for cracks, burn marks or oil in the plug well
Swap coil F with a coil from another cylinder, clear the codes and see whether the fault follows the coil
Check the coil power supply and earth with a multimeter against the model's wiring diagram
Test the control wire for continuity and short to ground between the coil connector and the engine control module
Inspect the spark plug for wear, gap and fouling, and replace it if it is out of condition

How to fix

Replace ignition coil F if it fails the swap test or tests faulty
Repair or replace damaged wiring and fix any short to ground in the control circuit
Clean or replace corroded or loose connectors and terminals
Restore the coil power or earth supply by repairing the fault in the feed circuit
Fit new spark plugs of the correct specification if they are worn or fouled
Replace or repair the engine control module only after wiring and coil faults have been ruled out

Can I keep driving?

Medium severity

Short, gentle journeys are possible, but a continuing misfire can overheat and damage the catalytic converter and cause further engine problems. If the check engine light flashes, avoid driving under load and get it repaired as soon as possible.

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