P2948 Engine Trouble Code
What is P2948?
P2948 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.
Code Information
| Code Type: | OBD-II Powertrain (P) Trouble Code |
| System: | Powertrain |
| Code: | P2948 |
P2948 Symptoms
Check Engine Light
Illuminated dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration
Starting Problems
Difficulty starting the engine
P2948 Code Structure
Understanding what each digit means in the P2948 powertrain trouble code:
| P | 2 | 9 | 4 | 8 |
|---|---|---|---|---|
| Powertrain Code | Fuel And Air Metering (Injector Circuit Malfunctions Only) | Injector Circuit Malfunction - Cylinders | Injection Pump Fuel Metering Control 'B' High | Clutch Position Sensor Circuit Malfunction |
How to Fix P2948
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:
Verify all electrical connections are clean and tight. Check for damaged wiring, especially in high-heat or high-vibration areas. Use manufacturer wiring diagrams for accurate diagnosis.
Technical Notes:
P2948 on electronically controlled automatic transmissions relates to shift solenoid operation. The solenoid actuates hydraulic circuits controlling clutches or bands for gear changes.
P2948 Description
P2948 engine trouble code is related to Clutch Position Sensor Circuit Malfunction.
Main Cause
The primary reason for P2948 OBD-II Engine Trouble Code is: Injector Circuit Malfunction - Cylinders.