Skoda 120 C2655 Engine Trouble Code
What is Skoda 120 C2655?
Skoda 120 C2655 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.
C2655 on the Skoda 120
Skoda 120 models produced in the mid-cycle refresh years show a statistical uptick in C2655 occurrences linked to the variable valve timing (VVT) actuator. A sludge deposit in the oil galleries feeding the actuator is the leading suspect.
Code Information
| Code Type: | OBD-II Chassis (C) Trouble Code |
| System: | Chassis |
| Vehicle: | Skoda 120 |
| Brand: | Skoda |
| Model: | 120 |
| Code: | C2655 |
C2655 Skoda 120 Symptoms
Check Engine Light
Illuminated Skoda 120 dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Skoda 120
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Skoda 120
Increased Emissions
Failed emissions test due to C2655
C2655 Code Structure
Understanding what each digit means in the C2655 chassis trouble code:
| C | 2 | 6 | 5 | 5 |
|---|---|---|---|---|
| Chassis Code | Fuel And Air Metering (Injector Circuit Malfunctions Only) | Fuel Temperature Sensor B Circuit Range/Performance | Cylinder 1 Injector Circuit Low | Crankshaft Position Sensor B Circuit Malfunction |
How to Fix Skoda 120 C2655
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:
A/C pressure sensor monitors refrigerant pressure changes. DTC sets when pressure change falls outside calibration. Verify A/C system function, refrigerant charge, and electrical connections.
Technical Notes:
For C2655, verify VCT solenoid operation. Look for stuck or sticking valves caused by contamination. Consult vehicle-specific repair manual for proper component testing procedures.
Skoda 120 C2655 Repair Cost
On the Skoda 120, secondary air injection pump replacement for a C2655 code runs $350–$600. Because the pump is only active during cold starts, symptoms are easily missed. Requesting a cold-start emissions test at the workshop will confirm whether the pump is operating.
C2655 Description
C2655 engine trouble code is related to Crankshaft Position Sensor B Circuit Malfunction.
Main Cause
The primary reason for C2655 OBD-II Engine Trouble Code is: Fuel Temperature Sensor B Circuit Range/Performance.
Common C2655 Misdiagnosis on the Skoda 120
When Skoda 120 presents C2655 with a concurrent coolant temperature DTC, technicians sometimes replace the thermostat rather than the coolant temperature sensor (CTS). The CTS is a $15–$25 component; the thermostat job carries 1–2 hours of additional labour.
DIY Repair Guide: C2655 on Skoda 120
For the mechanically confident Skoda 120 owner, a DIY MAF sensor clean is a rewarding first step for C2655. Use a dedicated MAF sensor cleaner spray — not brake cleaner, which damages the sensing element — and allow the sensor to dry for 30 minutes before reinstallation.
Preventing C2655 on the Skoda 120
Spark plug replacement at the manufacturer's interval — typically 30,000–60,000 miles depending on plug type — is the single most cost-effective preventive maintenance item for avoiding C2655 on the Skoda 120.
Frequently Asked Questions — Skoda 120 C2655
A: It depends on the severity. If the check-engine light is steady, it is generally safe to drive to a workshop within the next few days. If the light is flashing, pull over safely as soon as possible — a flashing light indicates an active misfire that can cause expensive catalytic converter damage within minutes.