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Engine computer and electrics

P0600 Control modules can't communicate with each other

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P0600 means: Control modules can't communicate with each other. The engine computer can't talk to the other control modules. Drive gently and have the car checked soon. The repair usually costs about €50–800 in Estonia. The most common cause: battery is weak. Other possible causes: wire or connector is corroded, A control module has failed.

Is it safe to drive?Get it checked soonDrive gently and have the car checked soon.
Typical repair cost€50–800parts and labour in Estonia

What it means

The engine computer can't talk to the other control modules. A weak battery or a bad connection is often to blame.

What could be wrong

  1. 1Battery is weak
  2. 2Wire or connector is corroded
  3. 3A control module has failed

What you can check yourself

Check the battery voltage and terminals first. See whether other warning lights are on too. Best left to a workshop. It needs a diagnostic tool and experience.

How we fix it

  1. We check the battery and earth connections
  2. We measure the data bus wiring
  3. We find the faulty module

Standard SAE description: Serial Communication Link Malfunction

Want a definite answer?

Bring the car to our workshop in Estonia for diagnostics. We read the fault codes, test the sensors and tell you what is wrong. Repair price depends on the work involved, generally €45 per hour.

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Questions

What does fault code P0600 mean?

Control modules can't communicate with each other. The engine computer can't talk to the other control modules. A weak battery or a bad connection is often to blame.

Can I drive with code P0600?

Drive gently and have the car checked soon.

How much does it cost to fix P0600?

Roughly €50–800 in Estonia. The price depends on exactly what has failed and on the car.

How is P0600 fixed?

We check the battery and earth connections. We measure the data bus wiring. We find the faulty module.

Related codes

P0219Engine speed went too highP0601Fault in the engine computer memoryP0603Engine computer lost its learned valuesP0606Fault in the engine computer processorP0641Sensor supply voltage has dropped outB1600PATS: key transponder signal not receivedB1601PATS: incorrect key code receivedB1602PATS: invalid key code format

Based on AI combined with our hands-on workshop experience and knowledge. This information is general and prices are approximate (Estonian workshop rates). The same code can mean different things on different cars. Only an inspection of the car gives a definite answer.

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