P16D8
PCM Internal IMA-CAN Communication Circuit Malfunction
P16D8 is an OBD-II diagnostic trouble code meaning: PCM Internal IMA-CAN Communication Circuit Malfunction. Common causes: open or short circuit in the communication circuit, poor contact in pcm or ima-can connectors. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- The car goes into emergency mode
- Gear shifting problems
- Reduced engine power
- Unstable engine operation
Causes
- Open or short circuit in the communication circuit
- Poor contact in PCM or IMA-CAN connectors
- PCM malfunction
- Problems with the IMA-CAN module
- Contact corrosion
How to Fix
- Check the integrity of the wiring harness between the PCM and IMA-CAN
- Inspect and clean the contacts in the connectors
- Check the voltage and resistance in the communication circuit
- Scan other modules for communication errors
- If necessary, replace the PCM or IMA-CAN module
Related codes
FAQ
What does the P16D8 code mean?
P16D8 is an OBD-II diagnostic trouble code that indicates: PCM Internal IMA-CAN Communication Circuit Malfunction
What causes a P16D8 error code?
The most common causes of P16D8 include: Open or short circuit in the communication circuit; Poor contact in PCM or IMA-CAN connectors; PCM malfunction; Problems with the IMA-CAN module.
How do I fix a P16D8 diagnostic trouble code?
To fix P16D8: Check the integrity of the wiring harness between the PCM and IMA-CAN. Inspect and clean the contacts in the connectors. Check the voltage and resistance in the communication circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P16D8?
Do not drive — repair immediately
How much does it cost to fix P16D8?
The estimated repair cost for P16D8 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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