The OBD code P0605 for Ford indicates a Powertrain Control Module (PCM) programming error.
This affects the PCM system.
Symptoms include the engine light being on, engine may not start.
Causes can be a programming error, physically damaged PCM, faulty PCM, open/shorted PCM harness, or poor electrical connection.
It is a serious issue that requires immediate attention.
A possible fix is to review possible causes, visually inspect wiring harness and connectors for damage, and check connector pins for any issues.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the Ford p0605 OBD Code
The vehicle may experience issues related to the engine control module (ECM) with fault code P0605.
- Symptoms: Engine Light ON.
- Engine may not start.
- Engine may stall while driving.
- Engine may run rough or have poor performance.
- Vehicle may have trouble shifting gears.
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Causes of the Ford p0605 OBD Code
P0605 in Ford vehicles typically indicates an internal ECM error.
- A P0605 code can be caused by a Powertrain Control Module (PCM) programming error.
- A physically damaged Powertrain Control Module.
- A faulty Powertrain Control Module.
- A Powertrain Control Module harness that is open or shorted.
- A Powertrain Control Module circuit with a poor electrical connection.
Fixing Ford Error Code p0605 Step By Step
Address the internal control module readonly memory error by reprogramming or replacing the PCM.
- To fix a Ford OBDII code P0605, start by reviewing the possible causes mentioned above.
- Visually examine the PCM wiring harness and connectors for any damage.
- Check the connector pins for signs of being broken, bent, pushed out, or corroded.
- If any issues are found, repair or replace the damaged components.
- Consider resetting the PCM or performing a software update to address the error code.
- If the problem persists, replacing the PCM may be necessary to resolve the P0605 fault code.
Cost Of Fixing Ford p0605 Fault Code
Diagnosing and repairing Ford code P0605 typically involves addressing internal control module issues.
The cost to diagnose and fix a Ford OBD code P0605 typically ranges from $75 to $150 per hour for labor rates.
With an estimated repair time of 1. 0 hour, the total cost can be around $75 to $150, depending on shop rates and the complexity of the issue.
Details of the Ford p0605 OBD Code
The Ford P0605 code indicates an internal control module readonly memory error.
OBD code P0605 for Ford vehicles indicates an internal control module readonly memory (ROM) error.
This error is triggered by the Engine Control Module (ECM) when it detects a fault in the ROM, which is a part of the ECM’s internal memory system.
The ROM stores critical information for the ECM to operate properly, and if an error is detected in this memory, the P0605 trouble code is set.
This code can lead to various issues with engine performance and should be addressed promptly to prevent further problems.
Mechanic’s Tech Notes
This section provides detailed information on diagnosing and fixing Ford code P0605.
To diagnose and fix OBDII code P0605 on a Ford, start by checking the Transmission Control Module (TCM) power and ground using a multimeter.
Verify TCM communication over the Controller Area Network (CAN) using a scan tool.
Visually inspect the wiring harness and connectors for any damage, and check connector pins for signs of being broken, bent, pushed out, or corroded.
If no visible issues are found, consider reprogramming or reflashing the TCM as a potential fix.
This process can help address the internal TCM error indicated by code P0605.
FAQ
OBD code P0605 in a Ford means a Powertrain Control Module (PCM) programming error. Symptoms include Engine Light ON, engine may not start. Fix: Check PCM and wiring for issues.
Common symptoms of fault code P0605 in a Ford car include Engine Light ON, engine may not start. Causes: PCM programming error, damaged PCM. Fix: Inspect wiring, connectors for damage.
Diagnose and repair OBD code P0605 in a Ford: Symptoms Engine Light ON, engine may not start. Causes PCM programming error, damaged PCM. Fix Inspect wiring, connectors for damage.

Wrap Up
If your Ford is displaying OBD code P0605, you may experience rough idling, stalling, or poor acceleration.
This code typically indicates an internal ECM error, possibly caused by a faulty powertrain control module (PCM), damaged wiring harness, or loose connections.
To address Ford OBD code P0605, first, inspect the PCM connectors for any signs of corrosion or damage.
Check the wiring harness for any frayed wires or shorts.
If no visible issues are found, consider reprogramming or replacing the PCM to resolve the error.