P2687 Engine Trouble Code
What is P2687?
P2687 code can indicate a faulty oxygen sensor, which may eventually damage the catalytic converter (repair cost: $2,000–$2,200). Professional diagnosis costs around $200–$210. Oxygen sensors are often straightforward to replace — check your owner's manual for location and instructions. This issue should be addressed promptly to prevent further damage.
Code Information
| Code Type: | OBD-II Powertrain (P) Trouble Code |
| System: | Powertrain |
| Code: | P2687 |
P2687 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
P2687 Code Structure
Understanding what each digit means in the P2687 powertrain trouble code:
| P | 2 | 6 | 8 | 7 |
|---|---|---|---|---|
| Powertrain Code | Fuel And Air Metering (Injector Circuit Malfunctions Only) | Fuel Temperature Sensor B Circuit Range/Performance | Ignition/Distributor Engine Speed Input Circuit Malfunction | Shift/Timing Solenoid Malfunction |
How to Fix P2687
Diagnostic Steps:
Regarding P2687, carefully inspect the wire harness near the intake manifold bracket, best accessed from below near the oil filter. Look for chafing, pinching, or damaged insulation.
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:
P2687 on electronically controlled automatic transmissions relates to shift solenoid operation. The solenoid actuates hydraulic circuits controlling clutches or bands for gear changes.
P2687 Description
P2687 engine trouble code is related to Shift/Timing Solenoid Malfunction.
Main Cause
The primary reason for P2687 OBD-II Engine Trouble Code is: Fuel Temperature Sensor B Circuit Range/Performance.