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P1326 fault code: what it means

P1326: Knock Sensor Detection System (KSDS) has picked up con-rod bearing wear on Theta II, Nu or Gamma GDI engines. Limp mode caps revs; not a knock sensor fault. Engine replacement usually needed.

Engine and gearbox (powertrain) · Safety risk

Usual causes, most likely first

  1. worn connecting rod bearings (machining debris restricting oil flow)
  2. low or degraded engine oil / oil starvation
  3. KSDS false trigger or software not updated (rare)

P1326 by make

Hyundai

Knock Sensor Detection System (KSDS) has picked up con-rod bearing wear on Theta II, Nu or Gamma GDI engines. Limp mode caps revs; not a knock sensor fault. Engine replacement usually needed.

Usual causes: worn connecting rod bearings (machining debris restricting oil flow); low or degraded engine oil / oil starvation; KSDS false trigger or software not updated (rare)

Kia

Knock Sensor Detection System (KSDS) has picked up con-rod bearing wear on Theta II, Nu or Gamma GDI engines. Limp mode caps revs; not a knock sensor fault. Engine replacement usually needed.

Usual causes: worn connecting rod bearings (machining debris restricting oil flow); low or degraded engine oil / oil starvation; KSDS false trigger or software not updated (rare)

What the repair usually costs

Not sure what P1326 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.