What is the Fault Code P0080？
The P0080 fault code applies to all vehicle manufacturers and means “Exhaust Valve Control Solenoid Circuit High (Bank 1)“.
Background Information: The camshaft’s function is to control the opening and closing of the valves. In a variable valve timing (VVT) system, the electronic camshaft adjuster valve (or Oil Control Valve, OCV) adjusts the camshaft angle by changing the oil pressure to the camshaft adjuster (mechanical part) based on commands from the Engine Control Module (ECM), ensuring the valves open and close at the optimal time. This fault code sets if the circuit voltage for the exhaust camshaft adjuster valve is higher than the calibrated maximum.
Symptoms of Fault Code P0080
If code P0080 is present in your vehicle, you might notice the following symptoms:
- Check engine light on the dashboard
- Reduced engine power
- Rough or unstable engine idle
- Increased fuel consumption
- Difficulty accelerating
- Engine makes metallic noise
Primary Causes of Fault Code P0080
- Faulty VVT solenoid (exhaust side)
- Damaged wiring or connectors
- Corroded or contaminated contacts
- Short circuit
- Increased supply voltage
- Problem with the engine ECU
How to Diagnose Fault Code P0080?
- Connect an OBD2 scanner and read/record the code.
- Check the wiring and connectors of the VVT solenoid for damage or contamination.
- Use a multimeter to check the VVT solenoid’s power supply and signal circuits.
- Measure the solenoid coil’s resistance. A value outside specification indicates a fault.
- Check the ECU for other codes related to voltage supply.
Possible Causes and Diagnostic Methods
Possible Cause | How to Check? |
|---|---|
Faulty VVT Solenoid | Check resistance and voltage at the terminals. |
Damaged Wiring or Connectors | Visual inspection, perform continuity test (ring out the circuit). |
Faulty Ground or Power Supply | Diagnose with a multimeter. |
ECU Fault | Perform computer diagnostics. |
Required Tools: OBD2 scanner, digital multimeter, vehicle repair manual, electrical tape, heat shrink tubing, spare connectors.
How to Resolve Fault Code P0080? (Problem Solutions)
Simple Fixes:
- Clean the contacts and connectors of the VVT solenoid.
- Clear the code using a scanner.
- Check and replace the relevant circuit fuse.
In-depth Diagnosis and Repair Plan:
- Replace the defective VVT solenoid.
- Repair or replace damaged wiring.
- Check and, if necessary, repair the engine ECU.
- Adjust the valve timing angle using diagnostic equipment (if applicable).
Solving Problems by Symptom
Symptom | Possible Solution |
|---|---|
Engine runs intermittently | Check the VVT solenoid and its circuit. |
Increased fuel consumption | Diagnose the VVT system and perform cam/crank correlation. |
Check engine light is on | Read and clear the code; address the root cause. |
Difficulty accelerating | Test the operation of the VVT solenoid. |
Fault Code P0080 in Common Vehicles
- P0080 in Audi: In Audi vehicles with TFSI engines, code P0080 often indicates a faulty camshaft adjustment valve, especially in cold weather. Wiring integrity must be checked.
- P0080 in Volkswagen: In VW models with VVT systems, the code can be caused by poor-quality connectors or contact issues for the solenoid. Verifying connections solves about half the cases.
- P0080 in BMW: For BMWs with Valvetronic, the P0080 code can be a result of an issue with the phasing control system. It’s important to check scanner data and diagnose each component in the circuit.
- P0080 in Nissan: In Nissan models, this fault often occurs due to VVT solenoid overheating, especially with frequent stop-and-go traffic. Replacing the solenoid is recommended.
- P0080 in Chevrolet: In the Chevrolet Cruze and other models with Ecotec engines, P0080 can be caused by contaminated oil passages affecting solenoid operation.
P0080 Frequently Asked Questions
Can you drive with fault code P0080?
Not advisable. Code P0080 can lead to reduced engine power, poor VVT system performance, and potentially serious damage in the long term.
Can P0080 be caused by a wiring issue?
Yes, damaged wires, corrosion, or short circuits are often the cause of this code.
How can I fix P0080 quickly?
You can start by cleaning the contacts, checking the wiring, and resetting the code. If that doesn’t work, you may need to replace the VVT solenoid or diagnose the ECU.
What to do if you encounter code P0080?
Code P0080 indicates a problem with the variable valve timing (exhaust) solenoid control circuit. This could be due to a faulty solenoid, a power supply issue, or an ECU problem.
Do I need to replace the VVT solenoid for P0080?
Yes, if the solenoid is damaged, overheated, or fails multimeter testing.
Is P0080 related to engine oil quality?
Indirectly, yes – contaminated or old oil can interfere with the VVT system, especially if the passages or the solenoid itself are clogged.
Related OBD2 Fault Codes for P0080
- P0013 – “B” Camshaft Position – Actuator Circuit/Open (Bank 1)
- P0079 – Exhaust Valve Control Solenoid Circuit Low (Bank 1)
- P0081 – Intake Valve Control Solenoid Circuit (Bank 2)
Important! Not addressing the cause can lead to overheating and damage to VVT system components, resulting in expensive repairs. Do not delay diagnosis. The sooner the cause is found and eliminated, the lower the risk of costly engine repairs.