OBD-II code · Powertrain (generic)
P05CF Cold Start B Camshaft Position Timing Performance Bank 2
Cold Start B Camshaft Position Timing Performance Bank 2: the component is electrically intact but its response does not match the command. This relates to engine timing; a fault can cause rough running, a no-start, or timing errors.
Is it safe to drive with P05CF?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPhaser slow due to oil viscosity or wear
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–5 h
- Emissions test
- Likely to fail
- Parts involved
- Cam Phaser B B2
Related codes
- P05CCCold Start A Camshaft Position Timing Performance Bank 1
- P05CDCold Start A Camshaft Position Timing Performance Bank 2
- P05CECold Start B Camshaft Position Timing Performance Bank 1
- P05D0Driver Mode Select Switch A Circuit
- P05D1Driver Mode Select Switch A Circuit Low
- P05D2Driver Mode Select Switch A Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.