AutoCodes – RAM – P1607 RAM

P1607 RAM Code - Powertrain Control Module Internal Shutdown Timer Slow Rationality

Quick Answer

The Powertrain Control Module (PCM) compares actual shutdown time to a calculated shutdown time value. Common causes include Low or no battery voltage, Faulty Alternator, Engine cooling conditions that may set the code. 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: P1607 RAM indicates Powertrain Control Module Internal Shutdown Timer Slow Rationality.
Common causes: Common causes include Low or no battery voltage, Faulty Alternator, Engine cooling conditions that may set the code.
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 683

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 Feb 12, 2024

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1607 RAM Description

The Powertrain Control Module (PCM) compares actual shutdown time to a calculated shutdown time value. The calculated shutdown time value is based on the amount the Engine Coolant Temperature (ECT) should drop after a completely warmed-up engine is shut down for a minimum of 8 hours. If the difference between the actual shutdown time and the calculated shutdown time is greater than the maximum value, a one-trip failure will be set. The shutdown time is measured again after 1 hour of ignition off time following the next engine warm-up cycle. The PCM compares the shutdown time to a calculated value. If the difference is greater than the maximum value, the MIL is illuminated and the P1607 code will be set.

OBDII Code P1607 RAM - Powertrain Control Module Internal Shutdown Timer Slow Rationality - AutoCodes.com — P1607 RAM Code - Powertrain Control Module Internal Shutdown Timer Slow Rationality

What does this mean?

What are the Possible Causes of the DTC P1607 RAM?

Low or no battery voltage
Faulty Alternator
Engine cooling conditions that may set the code
Engine coolant level
Blown Powertrain Control Module (PCM) Fuse
Outdated Powertrain Control Module program
Faulty Powertrain Control Module

How to Fix the DTC P1607 RAM?

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 P1607 RAM 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.

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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 P1607 RAM Code

1. What are common symptoms of OBDII code P1607?

- Common symptoms include engine stalling, rough idling, and difficulty starting the vehicle.

2. What does OBDII code P1607 indicate?

- OBDII code P1607 indicates a malfunction in the Powertrain Control Module (PCM) internal shutdown timer slow rationality.

3. What are the possible causes of OBDII code P1607?

- Possible causes include a faulty PCM, wiring issues, software glitches, or a weak battery.

4. How can I diagnose OBDII code P1607?

- Diagnosis involves using a scan tool to retrieve the error code, conducting a visual inspection of wiring and connections, and performing voltage tests on the PCM.

5. Can OBDII code P1607 be repaired at home?

- Repairing OBDII code P1607 may require advanced diagnostic tools and technical knowledge, so it's recommended to seek professional help.

6. Is it safe to continue driving with OBDII code P1607?

- It is not recommended to continue driving with OBDII code P1607 as it can lead to further damage to the vehicle's engine and components.

7. How much does it typically cost to repair OBDII code P1607?

- The cost of repairing OBDII code P1607 can vary depending on the underlying cause, but it may range from $200 to $500 or more at a repair shop.

8. Can a weak battery cause OBDII code P1607 to trigger?

- Yes, a weak battery can cause voltage fluctuations that may trigger OBDII code P1607, so it's important to ensure the battery is in good condition.

9. Will resetting the PCM clear OBDII code P1607?

- Resetting the PCM may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

10. How long does it take to repair OBDII code P1607?

- The repair time for OBDII code P1607 can vary depending on the exact cause, but it may take a few hours to a full day to diagnose and fix the issue.