Chevrolet Colorado P0957 Engine Trouble Code
What is Chevrolet Colorado P0957?
When Chevrolet Colorado P0957 code appears, first check your gas cap. Pull over safely, ensure it is tight, and inspect for cracks. A loose or damaged gas cap affects fuel-system pressure and emissions. A replacement cap costs about $3–$10. This simple fix can resolve the code and improve fuel economy.
P0957 on the Chevrolet Colorado
Many Chevrolet Colorado drivers first encounter P0957 as a result of worn ignition coil packs. The design of the Chevrolet engine bay can trap heat near these components, accelerating wear beyond the typical service interval.
Code Information
| Code Type: | OBD-II Powertrain (P) Trouble Code |
| System: | Powertrain |
| Vehicle: | Chevrolet Colorado |
| Brand: | Chevrolet |
| Model: | Colorado |
| Code: | P0957 |
P0957 Chevrolet Colorado Symptoms
Check Engine Light
Illuminated Chevrolet Colorado dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Chevrolet Colorado
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Chevrolet Colorado
Increased Emissions
Failed emissions test due to P0957
P0957 Code Structure
Understanding what each digit means in the P0957 powertrain trouble code:
| P | 0 | 9 | 5 | 7 |
|---|---|---|---|---|
| Powertrain Code | Intake Valve Control Solenoid Circuit Low | Injector Circuit Malfunction - Cylinders | Cylinder 1 Injector Circuit Low | Shift/Timing Solenoid Malfunction |
How to Fix Chevrolet Colorado P0957
Diagnostic Steps:
Oxygen sensors measure exhaust gas oxygen content to optimise air-fuel ratio. This optimisation improves fuel economy and reduces emissions. Sensors degrade over time and require periodic replacement.
Repair Solution:
Most manufacturers number cylinders sequentially from front to back. Ford V-engines start with cylinder 1 at front left. In V-6 engines, cylinder 4 is front right; in V-8 engines, cylinder 5 occupies that position.
Technical Notes:
For P0957, verify VCT solenoid operation. Look for stuck or sticking valves caused by contamination. Consult vehicle-specific repair manual for proper component testing procedures.
Chevrolet Colorado P0957 Repair Cost
ECU software update for the Chevrolet Colorado to resolve the P0957 calibration bug is performed free of charge at a franchised Chevrolet dealer under the technical service bulletin programme. Always confirm the ECU part number and current flash version before spending money on sensors.
P0957 Description
P0957 engine trouble code is related to Shift/Timing Solenoid Malfunction.
Main Cause
The primary reason for P0957 OBD-II Engine Trouble Code is: Injector Circuit Malfunction - Cylinders.
Common P0957 Misdiagnosis on the Chevrolet Colorado
Workshop technicians sometimes replace the entire ignition coil assembly on the Chevrolet Colorado when P0957 accompanies a cylinder-specific misfire. In many cases, only the spark plug in the misfiring cylinder has fouled; a $8 plug replaces a $140 coil pack.
DIY Repair Guide: P0957 on Chevrolet Colorado
The fuel pressure test on the Chevrolet Colorado requires a Schrader-valve type fuel pressure gauge ($25–$40) connected to the fuel rail test port. With the ignition ON (engine off), pressure should hold above 30 PSI for two minutes. A rapid drop confirms a leaking injector or failing regulator as the root cause of P0957.
Preventing P0957 on the Chevrolet Colorado
To keep the Chevrolet Colorado free of recurring P0957 faults, change the engine oil every 5,000–7,500 miles using a grade specified by Chevrolet. Oil viscosity directly affects VVT actuator response, and using the wrong grade is one of the most avoidable causes of this code.
Frequently Asked Questions — Chevrolet Colorado P0957
A: If your Chevrolet Colorado is within the factory powertrain warranty period (typically 3–5 years or 60,000–100,000 miles depending on region and generation), P0957 repairs caused by component defects should be covered. Bring your service history to the dealer appointment.