P0149
PowertrainFuel Systemhigh severityFuel Timing Error
What P0149 Means
The PCM detects incorrect fuel injection timing compared to the commanded value. This mostly affects diesel engines with electronically controlled injection timing.
Symptoms
- Rough running
- Reduced power
- Excessive smoke or noise
Common Causes
- Faulty injection timing control
- Fuel pump or injector fault
- Wiring or connector issues
- Faulty PCM
Diagnostic Steps
- Scan for stored codes and freeze frame
- Check injection timing with scan tool data
- Inspect injector and pump wiring
- Test injection timing actuator operation
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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Community Confirmed Fixes
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