Lawil S P0957 Engine Trouble Code
What is Lawil S P0957?
Lawil S P0957 indicates potential catalytic converter failure. If completely failed, your vehicle may not run properly and fuel economy will suffer significantly. Average replacement cost is $2,000–$2,140. This repair requires professional service and should not be delayed.
P0957 on the Lawil S
Service bulletins for the Lawil S specifically mention P0957 as a symptom of failed purge solenoid valves in the EVAP system. The solenoid body on this platform degrades in high-humidity environments and should be inspected whenever this code appears.
Code Information
| Code Type: | OBD-II Powertrain (P) Trouble Code |
| System: | Powertrain |
| Vehicle: | Lawil S |
| Brand: | Lawil |
| Model: | S |
| Code: | P0957 |
P0957 Lawil S Symptoms
Check Engine Light
Illuminated Lawil S dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Lawil S
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Lawil S
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 Lawil S P0957
Diagnostic Steps:
The catalytic converter has oxygen sensors before and after it. When warm and in closed-loop mode, the upstream O2 sensor reading should fluctuate, while downstream should remain steady.
Repair Solution:
Disconnected, dirty, or fouled spark plugs commonly prevent proper engine operation. Replace spark plugs every season or 25 hours. Verify proper spark plug gap. If plugs are good, check ignition components: spark plug wires, coils, and ignition module.
Technical Notes:
Parts or components should not be replaced based solely on P0957 DTC. Consult your vehicle service manual for proper diagnostic procedures, possible causes, and required testing before replacement.
Lawil S P0957 Repair Cost
When P0957 appears on a Lawil S, a camshaft position sensor swap costs $140–$260 all-in. This is one of the more affordable sensors on this platform. If the wiring harness is also damaged, add $60–$90 for harness repair or section replacement.
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 Lawil S
When P0957 triggers on the Lawil S, a flashing check-engine light (as opposed to a steady one) indicates an active misfire. Misfire codes are commonly misdiagnosed as sensor faults; always rule out ignition and fuel delivery issues before testing sensors.
DIY Repair Guide: P0957 on Lawil S
The coolant temperature sensor on the Lawil S is a straightforward DIY item (difficulty 2/5). Have a drain tray ready for the small amount of coolant that spills when the sensor is removed. Top up the cooling system afterwards and check for air pockets.
Preventing P0957 on the Lawil S
Transmission fluid degradation on the Lawil S directly affects solenoid operation. Replacing ATF at 40,000-mile intervals (rather than the often-quoted 'lifetime fill' recommendation) is the best insurance against shift-solenoid codes including P0957.
Frequently Asked Questions — Lawil S P0957
A: P0957 is a standardised OBD-II code that can appear on any make and model. However, the specific components and circuits that trigger this code, and the repair procedures involved, vary significantly between vehicles. The information on this page is focused on the Lawil S.