P133B 2017 Chevrolet Silverado Code - Cylinder 4 Glow Plug Offset Exceeded Learning Limit
Quick Answer
The Glow Plug Control Module has not learned the glow plug offset values. Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 4, Glow Plug 4 harness is open or shorted. 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
- P133B 2017 Chevrolet Silverado indicates Cylinder 4 Glow Plug Offset Exceeded Learning Limit.
- Common causes
- Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 4, Glow Plug 4 harness is open or shorted.
- 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 P133B 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P133B 2017 Chevrolet Silverado?
- Perform Glow Plug Learn procedure
- Faulty Glow Plug 4
- Glow Plug 4 harness is open or shorted
- Glow Plug 4 circuit poor electrical connection
How to Fix the DTC P133B 2017 Chevrolet Silverado?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P133B 2017 Chevrolet Silverado 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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Frequently Asked Questions about P133B 2017 Chevrolet Silverado Code
What does the OBDII code P133B mean on a 2017 Chevrolet Silverado?
P133B indicates that the cylinder 4 glow plug offset has exceeded the learning limit, meaning the system has detected an issue with the glow plug's operation or calibration.
What are the common symptoms of a P133B code?
Symptoms may include difficulty starting the engine in cold weather, reduced engine performance, increased emissions, or an illuminated check engine light.
What causes the P133B code to appear?
Common causes include a faulty glow plug in cylinder 4, wiring issues, a bad glow plug control module, or an incorrect calibration of the glow plug system.
How can I diagnose a P133B code on my Silverado?
Diagnosis typically involves scanning for codes, testing the cylinder 4 glow plug for continuity, inspecting the wiring and connectors, and verifying proper function of the glow plug control module.
Can a faulty glow plug trigger P133B?
Yes, a faulty glow plug in cylinder 4 is one of the most common reasons for this code.
What should I check first when troubleshooting P133B?
Start by inspecting the cylinder 4 glow plug and its wiring for damage, corrosion, or loose connections before testing the glow plug control module.
Can I drive with a P133B code?
While the truck may still run, driving with this code can lead to hard starting in cold weather and potential engine damage over time if not addressed.
How much does it cost to fix a P133B code?
The repair cost can vary but generally ranges from $100 to $300, depending on whether the glow plug, wiring, or control module needs replacement.
Is the P133B code specific to Chevrolet Silverado?
No, while it commonly appears in GM vehicles like the Silverado, this code can also occur in other vehicles with similar glow plug systems.
How do I clear a P133B code after repairs?
After completing the necessary repairs, use an OBDII scanner to clear the code and then test drive the vehicle to ensure the issue is resolved.
Discuss the causes and fixes for P133B 2017 Chevrolet Silverado OBDII Code
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