P0083
Intake Valve Control Solenoid Circuit High (Bank 2)P0083 is a generic OBD-II powertrain diagnostic trouble code: Intake Valve Control Solenoid Circuit High (Bank 2). It is logged by the engine control unit when the powertrain monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.
What P0083 means
P0083 is stored when the engine control module (ECM) detects an abnormally high voltage in the control circuit for the intake valve timing solenoid on Bank 2 — the engine bank that does not contain cylinder 1. This solenoid is part of the variable valve timing (VVT) system and regulates oil pressure flow to the intake camshaft phaser, allowing the ECM to advance or retard intake valve timing for optimised power, torque, and fuel economy across the RPM range. Under normal operation the ECM applies a pulse-width-modulated ground signal to the solenoid; when the return voltage exceeds calibrated limits — due to internal solenoid failure, wiring shorts to power, or a regulator fault — the ECM logs P0083 and may disable active valve timing on that bank. Drivers typically notice a rough idle, hesitation on acceleration, intermittent misfires, and reduced throttle response. The code usually triggers a steady MIL rather than an immediate limp mode, but left unresolved the incorrect intake timing can accelerate wear on the camshaft phaser and reduce catalyst efficiency over time.
Common causes
Most-frequently reported root causes when P0083 is logged.
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1
Faulty Bank 2 intake valve control solenoid with internally shorted or degraded coil winding drawing excess voltage
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2
Damaged wiring harness — frayed insulation, pinched conductors, or chafed wires creating a short-to-power condition
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3
Corroded or loose connector pins at the solenoid plug causing intermittent high-voltage spikes
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4
ECM voltage regulator drift — supply voltage rising above normal specification affecting all solenoids on that rail
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5
Poor or broken ground path on the solenoid circuit increasing effective circuit voltage
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6
Low or contaminated engine oil restricting oil flow to the phaser and causing the solenoid to over-duty-cycle
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7
Corrupted ECM firmware incorrectly interpreting feedback voltage thresholds
Symptoms drivers notice
How to diagnose P0083
A typical diagnostic flow when this code is present.
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1
Connect an OBD-II scan tool, confirm P0083, note any related VVT or camshaft position codes, and record freeze-frame data
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2
Check engine oil level and condition — low or sludged oil can cause solenoid malfunction; service if needed before further electrical testing
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3
Visually inspect the Bank 2 intake solenoid wiring harness for heat damage, chafing near exhaust components, or moisture intrusion at the connector
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4
With the ignition on, measure supply voltage at the solenoid connector (should be 12.0–13.5 V); values significantly above this suggest a regulator or wiring fault
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5
Measure solenoid coil resistance with a multimeter (factory spec typically 5–8 Ω); 0 Ω indicates an internal short, >15 Ω indicates an open coil
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6
Test harness continuity and check for shorts to power or ground between the ECM pin and solenoid connector
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7
Clear the code, road test, and monitor live VVT duty-cycle data to confirm the repair; replace solenoid or repair wiring as indicated
Related powertrain codes
Frequently asked questions
Is it safe to drive with P0083 active?
The vehicle is generally drivable short-term, but variable valve timing on Bank 2 will be impaired, causing reduced power and fuel economy. Prolonged driving risks additional wear on the camshaft phaser, so prompt diagnosis is recommended.
What is the difference between P0083 and P0082?
P0082 indicates a low-voltage (short-to-ground or open) condition on the Bank 2 intake solenoid circuit, while P0083 indicates a high-voltage condition (short-to-power or excessive supply voltage). Both affect the same solenoid but point to opposite electrical faults.
Can dirty engine oil cause P0083?
Yes. The VVT solenoid relies on clean oil at correct viscosity to actuate the camshaft phaser. Sludge or oil degradation can cause the solenoid to stick or over-draw current, which can alter circuit voltage and trigger related codes including P0083.
Will replacing the solenoid always fix P0083?
Not necessarily. If the high-voltage condition is caused by a wiring short-to-power or a failing ECM voltage regulator, replacing the solenoid will not resolve the fault. Always perform wiring and voltage testing before condemning the solenoid itself.
Disabling P0083 in software
RaceTune can permanently disable P0083 — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.
Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.
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