AutoCodes – Generic – P160C

P160C Code - Engine Calibration Information Not Programmed-GPCM

Quick Answer

The control functions for the fuel injection system are integrated in the Engine Control Module (ECM). Common causes include Program Injector Flow Rate in Glow Plug Control Module (GPCM). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P160C indicates Engine Calibration Information Not Programmed-GPCM .
Common causes: Common causes include Program Injector Flow Rate in Glow Plug Control Module (GPCM).
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 18,043

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P160C Description

The control functions for the fuel injection system are integrated in the Engine Control Module (ECM). During the manufacturing process, each injector's flow rate is measured and recorded as injection quantity adjustment (IQA) flow rate data. The flow rate data is then etched as a hexadecimal number on the body of the injector. This data, together with the injector's cylinder position, is stored in the memory of both the Glow Plug Control Module (GPCM) and the ECM. When the ignition is turn ON, both the GPCM and the ECM monitor to ensure that the fuel injection flow rate numbers are present. If any of the injector flow rate numbers are missing, the diagnostic for that control module will set the appropriate DTC.

OBDII Code P160C - Engine Calibration Information Not Programmed-GPCM - AutoCodes.com — P160C Code - Engine Calibration Information Not Programmed-GPCM

What does this mean?

What are the Possible Causes of the DTC P160C?

Program Injector Flow Rate in Glow Plug Control Module (GPCM)

How to Fix the DTC P160C?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P160C code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P160C code?

Need more information on how to fix the P160C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P160C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P160C BMW — Charging System Voltage Low
P160C Chevrolet — Engine Calibration Information Not Programmed-GPCM
P160C GMC — Engine Calibration Information Not Programmed-GPCM
P160C MINI — Charging System Voltage Low

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P160C Code

What does the OBDII code P160C indicate?

The P160C code indicates that the Engine Control Module (ECM) has detected that the engine calibration information has not been programmed into the Glow Plug Control Module (GPCM).

What symptoms might I notice if my vehicle has the P160C code?

Symptoms associated with the P160C code can include difficulty starting the engine, especially in cold conditions, reduced engine performance, and the Check Engine Light being illuminated.

What causes the P160C code to be triggered?

The P160C code can be triggered by several issues, including a faulty or unprogrammed Glow Plug Control Module (GPCM), errors during the programming process of the vehicle's ECM, or even power interruptions during programming.

How can I fix the P160C code?

To fix the P160C code, the Glow Plug Control Module may need to be reprogrammed or replaced. It is also important to ensure that there are no issues with the ECM and that all connections to the GPCM are secure and free of corrosion.

Is it safe to drive with the P160C code?

While it might be possible to drive a vehicle with the P160C code, it is not recommended, especially in cold weather, as the vehicle may experience difficulties starting. Continuous driving with this fault can lead to further complications.

What tools are required to diagnose the P160C code?

Diagnosing the P160C code typically requires an OBD-II scanner to read the code and monitor live data, as well as possibly needing programming tools to reprogram the GPCM or ECM if necessary.

Can I reprogram the GPCM myself to fix the P160C code?

Reprogramming the GPCM can be a complex process that usually requires specialized software and tools. It is recommended to have this procedure performed by a professional technician who has experience with vehicle electronic systems and access to up-to-date programming tools.

How urgent is it to address a P160C code?

Addressing the P160C code should be considered urgent, especially in colder climates, because it affects the vehicleâ€™s ability to start and operate efficiently in cold weather. Delaying repairs can lead to inconvenience and potentially more severe engine issues.

Can the P160C code affect the fuel economy of my vehicle?

Yes, the P160C code can potentially affect the fuel economy of your vehicle. Problems with the glow plug system can lead to inefficient combustion, especially during cold starts, which may result in increased fuel consumption.