Error code

OBD2 P0235

OBD2P0235
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Turbo/Super Charger Boost Sensor 'A' Circuit.

Severity

moderateCan drive, but performance may be affected. Address soon to prevent further damage.

Summary

P0235 indicates a malfunction in the boost control circuit of the turbocharger or supercharger system's sensor A. This issue affects the engine's ability to regulate boost pressure accurately.

Symptoms

  • Check Engine Light is on
  • Decreased performance and power

Common Causes

  • Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors
  • Defective boost pressure sensor
  • Damaged inlet ducting between the turbocharger and the intake manifold
  • Failed or failing PCM (rare)

Diagnosis

  1. Inspect wiring and connectors for the boost control circuit
  2. Check inlet ducting between turbocharger/supercharger and intake manifold
  3. Test boost pressure sensor A

Fixes

  • Replace defective boost pressure sensor or damaged wiring/connectors

FAQ

Can I drive with P0235?

Yes, but performance may be reduced and the engine could suffer from overboost conditions. It's best to address this issue soon.

What does sensor A refer to in P0235?

Sensor A is a specific boost pressure sensor in the turbocharger or supercharger system circuit, which may vary by vehicle manufacturer.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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