P2506
ECM/PCM Power Input Signal Range/Performance
P2506 is an OBD-II diagnostic trouble code meaning: ECM/PCM Power Input Signal Range/Performance. Common causes: faulty generator, poor contact in the ecu power circuit. Estimated repair cost: $56–278.
Symptoms
- Rough engine operation
- Power dips
- Spontaneous engine stop
- Difficulty starting
- Flashing warning lights on the dashboard
Causes
- Faulty generator
- Poor contact in the ECU power circuit
- Corroded battery terminals
- Worn alternator belt
- Malfunction of the control unit itself
How to Fix
- Check battery and generator voltage
- Inspect and clean battery terminals
- Check the integrity of the wiring to the ECU
- Diagnose generator operation
- If necessary, replace the control unit
Related codes
Error P2506 by Vehicle Brand
FAQ
What does the P2506 code mean?
P2506 is an OBD-II diagnostic trouble code that indicates: ECM/PCM Power Input Signal Range/Performance
What causes a P2506 error code?
The most common causes of P2506 include: Faulty generator; Poor contact in the ECU power circuit; Corroded battery terminals; Worn alternator belt.
How do I fix a P2506 diagnostic trouble code?
To fix P2506: Check battery and generator voltage. Inspect and clean battery terminals. Check the integrity of the wiring to the ECU. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2506?
Do not drive — repair immediately
How much does it cost to fix P2506?
The estimated repair cost for P2506 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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