OBD-II code · Powertrain (generic, extended)
P2DD7 Cold Start Fuel Injection Quantity B Lower Than Expected
During cold start, the measured fuel injection quantity for group B is below the calibrated cold-start window. Cold-start strategy or injector flow drift.
Is it safe to drive with P2DD7?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyInjectors partially clogged
- PossibleFuel rail pressure low
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–6 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Injector Group B, Fuel Rail, Ecm
Related codes
- P027ECold Start Fuel Injection Quantity A Lower Than Expected
- P2DE0Cold Start Fuel Injection Quantity C Lower Than Expected
- P2DE2Cold Start Fuel Injection Quantity D Lower Than Expected
- P2DD4Control Pilot Charging Switch B Stuck On
- P2DD5Fuel Injection Quantity B Lower Than Expected
- P2DD6Fuel Injection Quantity B Higher Than Expected
- P2DD8Cold Start Fuel Injection Quantity B Higher Than Expected
- P2DD9EVAP System Leak Detection Pump Control Circuit Performance
- P2DDAEVAP System Leak Detection Pump Performance/Stuck Off
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.