PCM Not Programmed
1997-1997 Dodge Dakota 4.7L V8
The 1997 Dodge Dakota is equipped with a 4.7L V8 engine. Below you'll find detailed p1602 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The PCM has not been programmed with the required vehicle-specific calibration software. This typically occurs when a replacement PCM is installed without completing the flash programming procedure.
Symptoms
- Engine will not start
- Check Engine Light on
- Multiple system malfunctions
- No communication with certain modules
Common Causes
- Replacement PCM installed without programming
- PCM flash programming interrupted or failed
- PCM memory corruption
- Incorrect PCM part number installed
- Battery disconnected during programming
Diagnostic Steps
- Verify PCM part number matches vehicle application
- Attempt to flash program PCM with dealer-level scan tool
- Check for stable battery voltage during programming (use charger)
- Verify VIN is programmed correctly
- Check for software updates or TSBs
Repair Notes
Flash program the PCM with the correct vehicle calibration using a dealer-level diagnostic tool.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1602 on Other Vehicles
Common Questions
What does code P1602 mean on a 1997-1997 Dodge Dakota?
P1602 stands for "PCM Not Programmed". The PCM has not been programmed with the required vehicle-specific calibration software. This typically occurs when a replacement PCM is installed without completing the flash programming procedure.
What are the symptoms of P1602 on a Dodge Dakota?
Common symptoms of P1602 include: Engine will not start, Check Engine Light on, Multiple system malfunctions, No communication with certain modules.
What causes P1602 on a 1997-1997 Dodge Dakota?
Common causes of P1602 include: Replacement PCM installed without programming, PCM flash programming interrupted or failed, PCM memory corruption, Incorrect PCM part number installed, Battery disconnected during programming.
Last updated: March 2026