P0702 Engine Trouble Code
What is P0702?
P0702 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: | P0702 |
P0702 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
P0702 Code Structure
Understanding what each digit means in the P0702 powertrain trouble code:
| P | 0 | 7 | 0 | 2 |
|---|---|---|---|---|
| Powertrain Code | Intake Valve Control Solenoid Circuit Low | Fuel Rail Pressure Sensor Circuit Malfunction | Cold Start Injector 1 Malfunction | Glow Plug/Heater Circuit 'A' Malfunction |
How to Fix P0702
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:
VSS concerns may stem from noisy input signals caused by RFI/EMI from ignition wires, charging circuits, or aftermarket equipment. Verify VSS reads 0 mph when transmission is in Park.
Technical Notes:
P0702 DTC specifically relates to camshaft timing. When cam timing is over-retarded, the check-engine light illuminates and this code sets. Verify VCT solenoid operation and check for contamination.
P0702 Description
P0702 OBD-II Trouble Code: The code is triggered by the Engine Control Module (
Main Cause
The primary reason for P0702 OBD-II Engine Trouble Code is: Fuel Rail Pressure Sensor Circuit Malfunction.