P1598 Chevrolet Code - Power Take Off Engine Speed Request Signal Message Counter Incorrect
Quick Answer
The Power Take-Off Control Module is constantly sending the Engine Control Module (ECM) serial data messages with information regarding its request for modifying engine speed. Common causes include Faulty Power Take-Off Control Module, Power Take-Off Control Module harness is open or shorted, Power Take-Off Control Module circuit poor electrical connection. 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
- P1598 Chevrolet indicates Power Take Off Engine Speed Request Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Power Take-Off Control Module, Power Take-Off Control Module harness is open or shorted, Power Take-Off Control Module circuit poor electrical connection.
- 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.
Code P1598 Chevrolet Description
The Diagnostic Trouble Code (DTC) will be set when the Power Take-Off Control Module detects a fault in the serial data message between the Power Take-Off Control Module and the Engine Control Module.
What are the Possible Causes of the DTC P1598 Chevrolet?
- Faulty Power Take-Off Control Module
- Power Take-Off Control Module harness is open or shorted
- Power Take-Off Control Module circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1598 Chevrolet?
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 P1598 Chevrolet 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 P1598 Chevrolet code?
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Information for Specific Chevrolet Models
- P1598 2014 Chevrolet Silverado — Power Take Off Engine Speed Request Signal Message Counter Incorrect
- P1598 2015 Chevrolet Silverado — Power Take Off Engine Speed Request Signal Message Counter Incorrect
- P1598 2016 Chevrolet Silverado — Power Take Off Engine Speed Request Signal Message Counter Incorrect
- P1598 2017 Chevrolet Silverado — Power Take Off Engine Speed Request Signal Message Counter Incorrect
- P1598 2018 Chevrolet Silverado — Power Take Off Engine Speed Request Signal Message Counter Incorrect
Frequently Asked Questions about P1598 Chevrolet Code
1. What does the OBDII code P1598 mean on a Chevrolet?
P1598 indicates an issue with the Power Take Off (PTO) engine speed request signal, specifically an incorrect message counter detected by the engine control module (ECM).
2. What are the common symptoms of code P1598 in a Chevrolet?
Common symptoms include the check engine light turning on, failure of the PTO system to engage, and possible reduced engine performance when using PTO functions.
3. What causes the P1598 code to appear in a Chevrolet?
The most common causes are faulty PTO-related sensors, a damaged or malfunctioning PTO switch, wiring or connector issues, or a failure in the ECM.
4. Can I drive my Chevrolet with the P1598 code active?
While you can usually drive the vehicle, the PTO system may not function properly, which could impact operations for vehicles that rely on PTO equipment. It’s best to address the issue promptly.
5. How do I diagnose the P1598 code on my Chevrolet?
Start by inspecting the PTO wiring and connectors for damage or corrosion. Use a scan tool to monitor PTO-related data and perform continuity tests on the circuit if necessary.
6. What repairs are commonly needed to fix the P1598 code in a Chevrolet?
Repairs may include replacing a damaged PTO sensor or switch, reprogramming or replacing the ECM, or repairing damaged wiring or connectors in the PTO circuit.
7. Can a faulty ECM cause the P1598 code on my Chevrolet?
Yes, a malfunctioning ECM can fail to process PTO signals correctly, leading to the P1598 code.
8. Is the P1598 code specific to Chevrolet vehicles with PTO systems?
Yes, this code is typically found in Chevrolet vehicles equipped with Power Take Off systems, commonly used in work trucks and commercial vehicles.
9. How much does it cost to fix the P1598 code in a Chevrolet?
Repair costs vary depending on the root cause but can range from $50 for minor wiring repairs to $500 or more if the ECM needs replacement or reprogramming.
10. Can a software update fix the P1598 code in a Chevrolet?
In some cases, a software update for the ECM may resolve the issue if the problem arises from a programming glitch. Consult a dealership or qualified technician to confirm.
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