Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / C1563 — 16-bit ROM memory error

C1563 — 16-bit ROM memory error

Detailed page for trouble code C1563.

34,405codes
59brands
11,914generic
22,491specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

C1563

ALFA ROMEO C — Chassis

16-bit ROM memory error

Brand: ALFA ROMEO
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Corrupted firmware or failed software update
  • Failed or failing ROM/EEPROM memory chip inside the control unit
  • Interruption of power (battery disconnect/voltage drop) during programming
  • Poor power supply or ground to the module (voltage spikes, low VBAT)
  • Water, heat, or physical damage to the control module or connectors
  • Faulty wiring or connector corrosion causing intermittent communications

Symptoms

  • Associated system warning light(s) illuminated (depending on module)
  • Loss or intermittent loss of the functions controlled by the module
  • Module not responding or not recognized by dealer scan tool / CAN bus
  • Vehicle may enter limp mode or disable related systems
  • DTC(s) repeatedly return after clearing
  • Failed or incomplete software update reported by diagnostics

What to check

  • Scan vehicle with a capable diagnostic tool and record all stored and pending DTCs and freeze-frame data
  • Note module firmware and calibration part numbers and any recent programming history
  • Visually inspect the module and connector for corrosion, water ingress, bent pins or heat damage
  • Check battery state of charge and charging system; ensure stable VBAT (12.6–14.4 V) during tests
  • Measure supply voltage and ground continuity at the module connector pins
  • Check CAN/bus communications for errors and presence of other module faults that may affect programming

Signal parameters

  • VBAT (battery voltage at module)
  • Ground voltage/continuity at module ground pins
  • Module wake/sleep status (awake/sleep/standby)
  • CAN bus traffic on related bus (messages/sec)
  • Firmware version and calibration ID
  • Memory checksum or CRC value reported by diagnostic tool

Diagnostic algorithm

  1. Safely secure vehicle and ensure battery is fully charged; use a stable power supply or battery charger during reprogramming
  2. Connect a manufacturer-capable diagnostic tool and read all DTCs, freeze-frame and module info; record firmware/calibration IDs
  3. Note recent service history: was the module recently programmed, replaced or subjected to battery disconnects?
  4. Visually inspect the module housing and connector for moisture, corrosion, or damage; repair wiring/connectors as needed
  5. Verify battery voltage and alternator function; ensure stable power (12.6–14.4 V) while testing
  6. Measure supply and ground at the module connector; repair poor grounds or supply faults
  7. Check CAN bus for communication errors and verify other modules are healthy — resolve bus issues first if present
  8. Attempt to clear the code and perform a normal key cycle; see if code returns
  9. Using manufacturer diagnostic tools, read memory/checksum details and attempt a re-flash of the latest approved firmware (follow OEM procedures exactly)
  10. If re-flash fails or the diagnostic tool reports hardware memory faults, replace the affected control module with a new or re-manufactured unit and program it per OEM instructions
  11. After repair or reprogramming, verify correct operation of the module and related systems and re-scan to confirm no memory faults remain
  12. If replacement is required, preserve vehicle immobilizer/security programming steps (if applicable) and follow paired-module procedures

Likely causes

  • Corrupted firmware after a recent reflash or update
  • Failed memory chip (ROM/EEPROM) inside the affected ECU
  • Low or unstable battery voltage during programming
  • Poor ground or power supply to the module
  • Connector corrosion or damaged harness to the module

Fault status

⚠️ Status
16-bit ROM memory error — module reports invalid/corrupted ROM data or checksum failure; reflash or module replacement may be required.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 1.5-4.0 hours

Similar codes

P0601 P0600 P0606 P0607 U0100 C1560
89

Browse 89 ALFA ROMEO manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

ALFA ROMEO

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

C1563

FIAT C — Chassis

16-bit ROM memory error

Brand: FIAT
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Corrupted firmware or failed software update
  • Failed or failing ROM/EEPROM memory chip inside the control unit
  • Interruption of power (battery disconnect/voltage drop) during programming
  • Poor power supply or ground to the module (voltage spikes, low VBAT)
  • Water, heat, or physical damage to the control module or connectors
  • Faulty wiring or connector corrosion causing intermittent communications

Symptoms

  • Associated system warning light(s) illuminated (depending on module)
  • Loss or intermittent loss of the functions controlled by the module
  • Module not responding or not recognized by dealer scan tool / CAN bus
  • Vehicle may enter limp mode or disable related systems
  • DTC(s) repeatedly return after clearing
  • Failed or incomplete software update reported by diagnostics

What to check

  • Scan vehicle with a capable diagnostic tool and record all stored and pending DTCs and freeze-frame data
  • Note module firmware and calibration part numbers and any recent programming history
  • Visually inspect the module and connector for corrosion, water ingress, bent pins or heat damage
  • Check battery state of charge and charging system; ensure stable VBAT (12.6–14.4 V) during tests
  • Measure supply voltage and ground continuity at the module connector pins
  • Check CAN/bus communications for errors and presence of other module faults that may affect programming

Signal parameters

  • VBAT (battery voltage at module)
  • Ground voltage/continuity at module ground pins
  • Module wake/sleep status (awake/sleep/standby)
  • CAN bus traffic on related bus (messages/sec)
  • Firmware version and calibration ID
  • Memory checksum or CRC value reported by diagnostic tool

Diagnostic algorithm

  1. Safely secure vehicle and ensure battery is fully charged; use a stable power supply or battery charger during reprogramming
  2. Connect a manufacturer-capable diagnostic tool and read all DTCs, freeze-frame and module info; record firmware/calibration IDs
  3. Note recent service history: was the module recently programmed, replaced or subjected to battery disconnects?
  4. Visually inspect the module housing and connector for moisture, corrosion, or damage; repair wiring/connectors as needed
  5. Verify battery voltage and alternator function; ensure stable power (12.6–14.4 V) while testing
  6. Measure supply and ground at the module connector; repair poor grounds or supply faults
  7. Check CAN bus for communication errors and verify other modules are healthy — resolve bus issues first if present
  8. Attempt to clear the code and perform a normal key cycle; see if code returns
  9. Using manufacturer diagnostic tools, read memory/checksum details and attempt a re-flash of the latest approved firmware (follow OEM procedures exactly)
  10. If re-flash fails or the diagnostic tool reports hardware memory faults, replace the affected control module with a new or re-manufactured unit and program it per OEM instructions
  11. After repair or reprogramming, verify correct operation of the module and related systems and re-scan to confirm no memory faults remain
  12. If replacement is required, preserve vehicle immobilizer/security programming steps (if applicable) and follow paired-module procedures

Likely causes

  • Corrupted firmware after a recent reflash or update
  • Failed memory chip (ROM/EEPROM) inside the affected ECU
  • Low or unstable battery voltage during programming
  • Poor ground or power supply to the module
  • Connector corrosion or damaged harness to the module

Fault status

⚠️ Status
16-bit ROM memory error — module reports invalid/corrupted ROM data or checksum failure; reflash or module replacement may be required.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 1.5-4.0 hours

Similar codes

P0601 P0600 P0606 P0607 U0100 C1560
Repair manuals

Manual library for FIAT

26

Browse 26 FIAT manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

FIAT

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .