Pontiac Tempest C2655 Engine Trouble Code
What is Pontiac Tempest C2655?
The Pontiac Tempest C2655 check-engine light can indicate issues ranging from minor (loose gas cap) to serious (catalytic converter failure). Professional diagnostic scanning at a dealer or shop will identify the exact cause and required repairs.
C2655 on the Pontiac Tempest
On the Pontiac Tempest, a secondary air injection pump that has seized due to moisture ingress is a common trigger for C2655. The fault is usually only present on cold starts and clears itself after two to three warm-up cycles, making it easy to overlook.
Code Information
| Code Type: | OBD-II Chassis (C) Trouble Code |
| System: | Chassis |
| Vehicle: | Pontiac Tempest |
| Brand: | Pontiac |
| Model: | Tempest |
| Code: | C2655 |
C2655 Pontiac Tempest Symptoms
Check Engine Light
Illuminated Pontiac Tempest dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Pontiac Tempest
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Pontiac Tempest
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 Pontiac Tempest C2655
Diagnostic Steps:
Check if fuel pump primes when key is turned to ON. Measure fuel pressure and verify bright white-blue spark at all plugs. Also verify mechanical timing alignment.
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.
Pontiac Tempest C2655 Repair Cost
On the Pontiac Tempest, 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 Pontiac Tempest
The Pontiac Tempest is frequently taken to workshops for a C2655 fault where the technician replaces the throttle position sensor (TPS). In a significant proportion of cases, the root cause is a loose or cracked vacuum hose downstream of the throttle body that should have been found in a basic visual inspection.
DIY Repair Guide: C2655 on Pontiac Tempest
The throttle body on the Pontiac Tempest can be cleaned without full removal. Use a clean rag and throttle body cleaner spray with the engine off and cool. After cleaning, an idle relearn is mandatory: disconnect the battery for 10 minutes, reconnect, and allow the engine to idle for 10 minutes undisturbed.
Preventing C2655 on the Pontiac Tempest
For diesel Pontiac Tempest owners, a DPF (Diesel Particulate Filter) regeneration run on the motorway every 500 miles prevents soot blockage that back-pressures the exhaust and forces C2655 flags via the pressure differential sensors.
Frequently Asked Questions — Pontiac Tempest 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.