Damaged wiring or short to a voltage supply on the RPM output circuit; Corroded, loose or pushed-back pins in the engine control unit or receiving module connector; Fault in the receiving device, such as the instrument cluster or another module, pulling the signal line high; Open circuit on the signal wire causing the line to float high; Poor power or earth supply to the control unit affecting its output stage; Internal fault in the engine control unit output driver; Non-standard accessory or aftermarket device wired into the RPM signal.

P06EE

Engine RPM Output Circuit High.

Generic
Powertrain
Generic code
Low severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
6: AreaComputer and output circuits
EE: FaultThe specific fault in that area

What it means

P06EE is a generic code meaning the engine control unit has detected a voltage that is too high on its engine speed (RPM) output circuit. This is the signal the control unit sends to other devices such as the instrument cluster rev counter or other modules. The control unit monitors the output and found it sitting high when it expected a normal switching signal, which points to a short to voltage, a wiring fault or a fault in the output driver.

Symptoms

Rev counter reads zero, flickers or behaves erratically
Engine management warning light on
Other systems that use the engine speed signal behave oddly, depending on the model
Intermittent fault that comes and goes with vibration or damp weather
Engine usually runs normally with no change in performance

Possible causes

Damaged wiring or short to a voltage supply on the RPM output circuitlikely
Corroded, loose or pushed-back pins in the engine control unit or receiving module connectorlikely
Fault in the receiving device, such as the instrument cluster or another module, pulling the signal line highpossible
Open circuit on the signal wire causing the line to float highpossible
Poor power or earth supply to the control unit affecting its output stagepossible
Internal fault in the engine control unit output driverrare
Non-standard accessory or aftermarket device wired into the RPM signalrare

How to diagnose

Read all stored and pending codes and record the freeze frame data, noting whether other communication or circuit codes are present
Check whether the rev counter and any other RPM-dependent system work, and whether the fault is constant or intermittent
Look for any aftermarket accessories or previous repairs connected to the RPM signal wire
Inspect the wiring and connectors between the engine control unit and the receiving modules for chafing, water ingress, corrosion and damaged pins
Using the manufacturer wiring diagram for the specific model, identify the RPM output circuit and test it for a short to voltage and for continuity
Check the voltage and earth supplies to the engine control unit and the receiving module
Test the signal with an oscilloscope while the engine runs to confirm that it switches correctly
If wiring and supplies are sound, test or substitute the receiving module, and only then suspect the engine control unit, following model-specific procedures

How to fix

Repair or replace damaged wiring on the RPM output circuit
Clean, repair or replace corroded or damaged connectors and terminals
Remove or correct any faulty aftermarket wiring connected to the signal
Repair power or earth supply faults to the control units
Repair or replace the receiving module if it is holding the line high
Replace or repair the engine control unit only if testing confirms an internal fault, and have it programmed as required for the model

Can I keep driving?

Low severity

The car can usually be driven as the engine normally runs fine, but get it checked soon. Stop and have it looked at if the engine starts to run badly, other warning lights appear or the car loses power.

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