P1D20
Multi Module Handshake Failure
P1D20 is an OBD-II diagnostic trouble code meaning: Multi Module Handshake Failure. Common causes: mismatch between module software versions, problems with the can data bus. Estimated repair cost: ~$167.
Symptoms
- Check Engine Light Is On
- Reduced engine performance
- Problems with the operation of various car systems
- Infotainment system malfunctions
- Limitation of functionality of some systems
Causes
- Mismatch between module software versions
- Problems with the CAN data bus
- Malfunction of one of the electronic modules
- Poor contact in wiring connectors
- Problems with power supply of electronic modules
How to Fix
- Check the status of the CAN data bus
- Inspect the connectors and wiring to the electronic modules
- Check power supply of all modules
- Update module software
- Diagnostics and replacement of a faulty module if necessary
Related codes
FAQ
What does the P1D20 code mean?
P1D20 is an OBD-II diagnostic trouble code that indicates: Multi Module Handshake Failure
What causes a P1D20 error code?
The most common causes of P1D20 include: Mismatch between module software versions; Problems with the CAN data bus; Malfunction of one of the electronic modules; Poor contact in wiring connectors.
How do I fix a P1D20 diagnostic trouble code?
To fix P1D20: Check the status of the CAN data bus. Inspect the connectors and wiring to the electronic modules. Check power supply of all modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1D20?
Yes, but get it checked soon
How much does it cost to fix P1D20?
The estimated repair cost for P1D20 is ~$167. Actual cost depends on your vehicle, location, and labor rates.
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