P1689
No Communication Between ECM and Injection Pump Module Data
P1689 is an OBD-II diagnostic trouble code meaning: No Communication Between ECM and Injection Pump Module Data. Common causes: open or short circuit in the communication circuit, fuel injection pump module malfunction. Estimated repair cost: $56–222.
Symptoms
- Engine won't start
- Unstable engine operation
- Power reduction
- Check Engine Light Is On
- Acceleration problems
Causes
- Open or short circuit in the communication circuit
- Fuel injection pump module malfunction
- Problems with the ECU
- Poor contact in connectors
- Software errors in the ECU
How to Fix
- Check the integrity of the communication circuit between the ECU and the fuel injection pump module
- Inspect connectors for corrosion or damage
- Check the power supply and ground of the fuel injection pump module
- Scan the ECU for errors
- If necessary, replace the injection pump module or ECU
Related codes
Error P1689 by Vehicle Brand
FAQ
What does the P1689 code mean?
P1689 is an OBD-II diagnostic trouble code that indicates: No Communication Between ECM and Injection Pump Module Data
What causes a P1689 error code?
The most common causes of P1689 include: Open or short circuit in the communication circuit; Fuel injection pump module malfunction; Problems with the ECU; Poor contact in connectors.
How do I fix a P1689 diagnostic trouble code?
To fix P1689: Check the integrity of the communication circuit between the ECU and the fuel injection pump module. Inspect connectors for corrosion or damage. Check the power supply and ground of the fuel injection pump module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1689?
Do not drive — repair immediately
How much does it cost to fix P1689?
The estimated repair cost for P1689 is $56–222. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat