P05EC

Symptoms

• Difficulty starting in cold weather
• Unstable engine operation during warm-up period
• Increased exhaust smoke during cold start
• Increased fuel consumption
• Check Engine Light Is On

Causes

• Nozzle wear (change in spray characteristics)
• Faulty or worn fuel injection pump
• Timing timing fault (belt/chain jump)
• Malfunction of the crankshaft or camshaft position sensor
• Dirty fuel filter or poor fuel quality

How to Fix

1. Read codes, check for timing and fuel system codes
2. Check timing timing (camshaft and crankshaft marks)
3. Check the fuel pressure in the system when cranking with the starter
4. Conduct injector diagnostics on a bench
5. Check the signals from the crankshaft and camshaft sensors with an oscilloscope
6. If necessary, adjust or replace fuel system elements

Related codes

Error P05EC by Vehicle Brand