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Infiniti P1366

TDC2 Sensor Intermittent

What P1366 means on a Infiniti

On Infiniti vehicles, P1366 is logged when the ECU detects a fault in the powertrain: “TDC2 Sensor Intermittent”. P1366 is a manufacturer-specific Infiniti code (the "1" after the letter marks an OEM-defined code), so its meaning applies to Infiniti and may differ on other makes.

Common causes & symptoms

Typical triggers for a powertrain code like P1366 include faulty or ageing sensors, wiring/connector faults, a clogged or removed component, or a value drifting outside the ECU's expected window. Symptoms range from a check-engine light only, to limp mode, rough running, higher consumption or failed emissions tests.

P1366 and ECU tuning

When a Infiniti has had hardware changed for off-road/motorsport use (for example a removed DPF or EGR), the related monitor must be disabled in the ECU map or the code re-appears. Softechpro Solutions performs DPF/EGR/AdBlue/DTC off and recalculates the checksum, so codes like P1366 stay cleared after the flash. Genuine faults should always be repaired, not just hidden.

Related Infiniti codes

Need to clear P1366 after a delete?

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