OBD-II Code · Powertrain
P0035
Turbocharger Bypass Valve Control Circuit High
Severity
medium
Worth booking. It costs fuel, emissions or comfort until it is fixed.
Can you drive it
Only if running normally
A short trip to a shop may be reasonable if the light is steady and the car runs normally. Stop safely for a flashing light, severe shaking, overheating, loss of power, or another urgent warning. The code alone cannot confirm safety.
Indicative cost (USD)
$150–$700
Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
Bypass solenoid circuit high voltage.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then work the likely-causes list in the order shown.
That order is what a shop checks first for this code — wiring and connections before the component they run to, because a connector costs nothing to inspect and is a common answer.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Check engine light
- Boost issues
Likely causes
- Open circuitMost common
- Failed solenoid
- PCM driver
Read the full diagnostic procedureP0035 is the 'circuit high' version of the turbo/supercharger bypass valve control fault - the control signal is stuck above the upper electrical thr…
P0035 is the 'circuit high' version of the turbo/supercharger bypass valve control fault - the control signal is stuck above the upper electrical threshold, typically above 4.5V on a low-side driver with shorted-to-power conditions, or with current draw indicating the circuit is shorted to battery voltage.
Cheapest-first ladder
- Unplug the BPV and DMM the control wire to ground with key on - a stuck-high signal with the valve disconnected confirms the harness is shorted to battery voltage somewhere between PCM and valve; if the signal falls to zero when disconnected, the valve itself has an internal short to power.
- Inspect the harness route for chafing against a hot or live wire bundle - a chafed control wire that touches a 12V circuit produces exactly this fault.
- Confirm the solenoid resistance is within spec (12-30 ohms) - a partially shorted internal coil drops resistance and can pull more current than the driver expects. Expensive-misdiagnosis trap: replacing a PCM on a P0035 when the actual fault is harness-side and the PCM has correctly protected itself by reporting the high-current condition.
Vehicle-specific patterns2009-2015 VW / Audi 2.0T TSI throws P0035 alongside P0034 on alternating drive cycles as a marginal diverter valve solenoid varies between open and s…
- 2009-2015VW / Audi 2.0T TSI throws P0035 alongside P0034 on alternating drive cycles as a marginal diverter valve solenoid varies between open and shorted.
- 2011-2017Ford Explorer / Edge / Taurus SHO with the 3.5L EcoBoost throws P0035 from chafed BPV harness near the intercooler bracket.
- 2010-2016Subaru WRX / Forester XT with the EJ255 throws P0035 from a failed turbo recirculation valve.
- 2013-2018Hyundai Veloster Turbo / Sonata 2.0T with the Theta II turbo throws P0035 from a known supplier-defective electronic BPV.
Estimated repair$90 to $400
Look up another code
P0035 — frequently asked
What does a P0035 code mean?
Bypass solenoid circuit high voltage.
What causes a P0035 code?
Common causes: Open circuit; Failed solenoid; PCM driver.
What are the symptoms of a P0035 code?
Typical symptoms: Check engine light; Boost issues.
Is it safe to drive with a P0035 code?
Only if running normally. A short trip to a shop may be reasonable if the light is steady and the car runs normally. Stop safely for a flashing light, severe shaking, overheating, loss of power, or another urgent warning. The code alone cannot confirm safety. Estimated repair: $150-$700.
How do I diagnose a P0035 code?
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed. 1. Note every code that is set, not just this one. 2. Read the freeze frame — the conditions the fault was recorded under. 3. Confirm the fault is current rather than history. 4. Then work the likely-causes list in the order shown.
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