Is it safe to drive with a P0600 code?

Severity is high. Address P0600 sooner rather than later — driving with an active check engine light can worsen the problem or void emissions warranties.

How much does it cost to fix P0600?

Repair costs for P0600 typically range from $50 to $1500 in the US, depending on the underlying cause. The most common fix is: Damaged or corroded CAN bus wiring.

What are the symptoms of P0600?

Multiple warning lights. Erratic behavior across systems. Limp mode.

Check Engine Code

P0600

Serial Communication Link Malfunction

Severity: high DIY difficulty: 4/5 Typical cost: $50–$1500

What P0600 means

Modules in the car talk over a CAN bus. P0600 means one module can't talk to another. Often caused by a damaged wiring harness or a failed module.

Symptoms

Multiple warning lights
Erratic behavior across systems
Limp mode

Likely causes (most common first)

Damaged or corroded CAN bus wiring
Failed control module
Bad ground
Flat or weak battery (voltage dips cause communication faults)

Can I keep driving?

High — risk of damage if ignored

Typical repair cost

DIY fixes can start near $50 (parts only). Shop repairs for P0600 typically run up to $1500 depending on the underlying cause and vehicle. Start with the most common cause — Damaged or corroded CAN bus wiring — before throwing parts at it.

Related codes

U0100 U0101 U0121U0140

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