Powertrain
generic / SAE
P0600
Serial Communication Link
A general fault on a serial communication link - typically used by older single-wire diagnostic protocols (KWP2000, ISO 9141) before CAN became universal. ECU has lost or corrupted communication with another module.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / 00
Possible causes
- Harness fault on bus line high
- Gateway module routing CAN messages incorrectly low
- CAN terminating resistor (120 Ω) drifted out of spec low
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 80–600 €
- Estimated time: 0.5–3 h
- Component: serial communication bus
- MIL / check engine light
Sources
References
sae:J2012