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DTC codes / Volkswagen codes / P1535

P1535 · VolkswagenIntake Camshaft Control Circuit Bank 2 Short To Ground

P1535 on Volkswagen vehicles means the engine control module has detected a short to ground on the intake camshaft control circuit for bank 2, which is the bank that does not contain cylinder number one. The circuit is the electrical path from the module to the camshaft adjuster solenoid, and a short to ground means that wire is touching ground or the solenoid winding has failed internally.

SystemPowertrain
Code typeVolkswagen specific
SeverityMedium
Fix difficultyIntermediate
AreaVehicle speed, idle control and auxiliary inputs

Symptoms you may notice

  • Illuminated check engine light, often with no other symptoms besides the warning light
  • Rough idle or misfire at idle that may smooth out as engine speed increases
  • Reduced engine power and poor acceleration because camshaft timing stays in the default position
  • Slightly higher fuel consumption due to incorrect valve timing
  • In some cases a hard start or extended cranking when the camshaft is stuck retarded
  • A faint electrical burning smell if the solenoid winding has shorted internally

Common causes, most likely first

  1. Intake camshaft adjuster solenoid on bank 2 with an internally shorted winding
  2. Chafed or pinched harness wire between the engine control module and the bank 2 solenoid, touching ground
  3. Corroded or water-filled connector at the bank 2 camshaft adjuster solenoid
  4. Damaged engine control module driver for the bank 2 intake camshaft circuit after a solenoid short
  5. Aftermarket or incorrect solenoid installed previously that does not match the original resistance specification
  6. Oil contamination or sludge inside the solenoid connector causing a conductive path to ground

How to diagnose and fix it

  1. Scan all modules and record freeze-frame data for P1535 before clearing anything, then verify the code returns after a test drive
  2. Inspect the bank 2 intake camshaft adjuster solenoid connector for corrosion, oil intrusion, or pushed-back pins
  3. Measure resistance across the solenoid terminals and compare it to the manufacturer specification for the exact engine code
  4. Disconnect the engine control module and measure resistance from the solenoid signal wire to ground to check for a harness short
  5. Wiggle-test the harness while watching live camshaft timing data to expose an intermittent short to ground
  6. Replace the bank 2 intake camshaft adjuster solenoid if resistance is out of specification or the winding is shorted
  7. Repair or replace the affected harness section and recheck the circuit before condemning the engine control module

What a shorted camshaft solenoid hides

  • A shorted solenoid winding often tests fine when cold and only shorts to ground once the engine oil warms the coil, so the fault may not appear during a quick static resistance check.
  • Technicians sometimes replace the engine control module first, but the module driver is usually the victim of a shorted solenoid rather than the cause, so always check the solenoid and harness before fitting a new module.
  • The bank 2 intake camshaft solenoid shares a fused power supply with other engine actuators on many Volkswagen engines, so a blown fuse can set this code even though the solenoid itself is healthy.
  • Oil sludge or a restricted camshaft adjuster screen can mechanically load the solenoid and cause it to overheat and short internally, so the root cause may be missed maintenance rather than an electrical defect.
  • P1535 can appear after a timing chain service if the camshaft adjuster was reinstalled with a pinched or misrouted wire, so always review recent engine work before chasing the circuit.

Can I keep driving with P1535?

You can usually drive the vehicle to a workshop, but avoid hard acceleration and sustained high engine speeds because the camshaft timing will stay in its default position and the engine may run poorly. If the check engine light starts flashing or the engine misfires heavily, stop driving and have the vehicle towed.

Tools that help

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

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