U1899
Starter/Generator Control Module Lost Communication With Powertrain Control Module
U1899 is an OBD-II diagnostic trouble code meaning: Starter/Generator Control Module Lost Communication With Powertrain Control Module. Common causes: open or short circuit in the communication circuit, starter/generator control module malfunction. Estimated repair cost: $33–167.
Symptoms
- Check Engine Light Is On
- Problems starting the engine
- Unstable generator operation
- Reduced engine power
Causes
- Open or short circuit in the communication circuit
- Starter/Generator Control Module Malfunction
- Control module power problems
- Powertrain control module (PCM) malfunction
How to Fix
- Check the integrity of the wiring harness between the modules
- Check the power and grounding of the starter/generator control module
- Scan modules for other errors
- If necessary, replace the starter/generator control module
- Reflash or replace the powertrain control module (PCM) if necessary
Related codes
FAQ
What does the U1899 code mean?
U1899 is an OBD-II diagnostic trouble code that indicates: Starter/Generator Control Module Lost Communication With Powertrain Control Module
What causes a U1899 error code?
The most common causes of U1899 include: Open or short circuit in the communication circuit; Starter/Generator Control Module Malfunction; Control module power problems; Powertrain control module (PCM) malfunction.
How do I fix a U1899 diagnostic trouble code?
To fix U1899: Check the integrity of the wiring harness between the modules. Check the power and grounding of the starter/generator control module. Scan modules for other errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1899?
Yes, but get it checked soon
How much does it cost to fix U1899?
The estimated repair cost for U1899 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat