P1648high severityPowertrain
Serial Communication Link (F-CAN) Malfunction
on 2015 Honda Accord 3.5L V6 · FWD
What this code means
The powertrain control module has lost communication over the F-CAN serial data bus. This is a Honda manufacturer-specific code related to network faults.
Symptoms
- Multiple warning lights
- Modules not communicating
- No-start or drivability issues
Common causes
- Damaged CAN bus wiring
- Faulty control module on bus
- Corroded connector or ground
- PCM internal fault
Diagnostic steps
- Scan all modules for communication codes
- Inspect F-CAN wiring and connectors
- Check bus resistance and voltage
- Isolate faulty module on the network
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Other Powertrain codes on this vehicle
P0001
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P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
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P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1