Cold Start B Camshaft Position Timing Over-Advanced Bank 1

What does P054A mean?

P054A stands for Cold Start B Camshaft Position Timing Over-Advanced Bank 1. The engine computer has found a problem with vehicle speed signals, idle control or another sensor input.

Powertrain codes cover the engine, transmission and emissions. When the car's computer sees a reading outside its normal range, it stores this code and may turn on a warning light on the dashboard.

Common causes

• Faulty vehicle speed sensor
• Dirty throttle body or idle air control valve
• Faulty switch or sensor
• Damaged wiring or connector

What to do

1. Read all stored and pending codes with a scanner. Several codes together often point to one cause.
2. Note the freeze frame data (speed, temperature, load) recorded when the code was set.
3. Inspect the wiring and connectors of the part named in the code for damage, corrosion or looseness.
4. Fix the most likely and cheapest cause first, then clear the code and drive to see if it comes back.

Read this code from your own car

Plug in a cheap ELM327 adapter and the app shows every fault code, what it means and how to fix it.

Download free

Frequently asked questions

What does P054A mean?

P054A means “Cold Start B Camshaft Position Timing Over-Advanced Bank 1”. It belongs to the speed, idle control and inputs group: The engine computer has found a problem with vehicle speed signals, idle control or another sensor input.

Is it safe to drive with P054A?

You can usually drive carefully for a short time, but fix it soon to avoid further damage or higher fuel use.

How do I clear P054A?

Fix the cause, then clear the code with an OBD2 scanner or app. If the fault is still there, the code will come back.

Related codes

• P0546Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 1)
• P0547Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 1)
• P0548Exhaust Gas Temperature Sensor Circuit Low (Bank 2 Sensor 1)
• P0549Exhaust Gas Temperature Sensor Circuit High (Bank 2 Sensor 1)
• P054BCold Start B Camshaft Position Timing Over-Retarded Bank 1
• P054CCold Start B Camshaft Position Timing Over-Advanced Bank 2
• P054DCold Start B Camshaft Position Timing Over-Retarded Bank 2
• P0550Power Steering Pressure Sensor Circuit Malfunction

Code meanings can vary by manufacturer. This page is general guidance, not a repair manual. Always confirm the cause before replacing parts.