Fault Code P2509
Code meaning, symptoms, possible causes, part number, and estimated cost.
P2509
ECM/PCM Power Input Signal Intermittent/Erratic
This code indicates that the Engine/Powertrain Control Module (ECM/PCM) has detected intermittent or erratic variations in its power input signal.
Part Details
Part Name
Engine Control Module (ECM/PCM)
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪1200 - ₪5500
Engine Location
Engine compartment/Dashboard
Symptoms
- Check Engine Light on
- Intermittent vehicle stalling
- Intermittent starting issues
- Erratic engine operation
Possible Causes
- 1Loose or corroded electrical connections
- 2Faulty ignition relay
- 3ECM/PCM power circuit issue
- 4Failing alternator or battery
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