Faulty camshaft position actuator solenoid with an internal short to power; Short to voltage on the control circuit between the powertrain control module and the actuator; Corroded, damaged, or disconnected electrical connector at the actuator; Failed powertrain control module driver for the actuator circuit; Oil sludge or debris blocking the actuator, causing it to overheat and short internally

DTC codes / P20xx · Fuel and air metering and auxiliary emission controls / P2089

P2089'A' Camshaft Position Actuator Control Circuit High (Bank 1)

P2089 indicates that the powertrain control module has detected an abnormally high voltage on the control circuit for the bank 1 'A' camshaft position actuator, which is the solenoid that adjusts camshaft timing. The circuit is typically pulse-width modulated, and a high voltage reading means the control wire is likely shorted to power or the actuator's internal coil has failed.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Rough idle or engine misfire, especially when cold
Reduced engine performance and poor fuel economy
A noticeable lack of power during acceleration
In some cases, the engine may enter limp mode or have difficulty starting

Common causes, most likely first

Faulty camshaft position actuator solenoid with an internal short to power
Short to voltage on the control circuit between the powertrain control module and the actuator
Corroded, damaged, or disconnected electrical connector at the actuator
Failed powertrain control module driver for the actuator circuit
Oil sludge or debris blocking the actuator, causing it to overheat and short internally

How to diagnose and fix it

Use an OBD-II scanner to verify P2089 is the only stored code and check for related camshaft or crankshaft codes
Inspect the actuator connector and wiring for signs of corrosion, chafing, or loose pins
Measure resistance across the actuator solenoid terminals and compare to the manufacturer's specification
With the key on and engine off, back-probe the control circuit at the actuator to check for voltage when it should be off
Disconnect the powertrain control module and check for a short to voltage on the control wire using a multimeter
If the wiring is intact, replace the camshaft position actuator solenoid and clear the code
After repair, perform a road test to confirm the code does not return and the camshaft timing responds correctly

What a high voltage code really means

A high voltage code on a pulse-width modulated circuit often indicates a short to power rather than an open circuit, so testing for voltage on the control wire with the actuator disconnected is a critical step.
The camshaft position actuator solenoid is frequently misdiagnosed as a failed phaser or timing chain, but P2089 specifically points to the electrical control circuit, not mechanical timing components.
Oil condition plays a major role: sludge or low oil pressure can cause the actuator to draw excessive current and short internally, so checking oil level and condition is a smart preliminary step.
On some vehicles, a shorted actuator can back-feed voltage into the powertrain control module and cause drivability issues that mimic other sensor failures, so always check for related codes.
A faulty powertrain control module is rare but possible; before replacing it, confirm that the control wire is not shorted to voltage with the module disconnected.

Can I keep driving with P2089?

You can usually drive the vehicle with P2089, but avoid aggressive acceleration and heavy loads because the camshaft timing will not adjust properly, which can cause poor performance and increased emissions. Have the fault diagnosed soon to prevent potential damage to the actuator or catalytic converter.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.