C2537 Engine Trouble Code
What is C2537?
C2537 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 Chassis (C) Trouble Code |
| System: | Chassis |
| Code: | C2537 |
C2537 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
C2537 Code Structure
Understanding what each digit means in the C2537 chassis trouble code:
| C | 2 | 5 | 3 | 7 |
|---|---|---|---|---|
| Chassis Code | Fuel And Air Metering (Injector Circuit Malfunctions Only) | Fuel Composition Sensor Circuit Malfunction | Injection Pump Fuel Metering Control 'A' High | Shift/Timing Solenoid Malfunction |
How to Fix C2537
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:
Power steering pressure switch monitors system operation. If pressure changes are not detected after calibrated speed transitions, this DTC sets. Verify PSP switch operation and check for circuit opens or shorts.
Technical Notes:
C2537 DTCs can be triggered by upstream issues. For example, a dirty MAF sensor may cause incorrect fuel-trim adjustments, leading oxygen sensors to report mixture problems. Address root causes first.
C2537 Description
C2537 engine trouble code is related to Shift/Timing Solenoid Malfunction.
Main Cause
The primary reason for C2537 OBD-II Engine Trouble Code is: Fuel Composition Sensor Circuit Malfunction.