EngineLightCodes
Powertrain code

P23F0 Camshaft B Position Signal Output Circuit Low Bank 2

Severity
Fix soon
Typical repair cost
$70–$280
Do it yourself
Possible, easy
Shop time
0.3–1.2 hours

Same as P23EA on cam B bank 2.

How the engine computer detects it

Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.

Written from public technical sources and not yet checked by a mechanic. How we write these pages

Symptoms

  • Check engine light on
  • Power loss especially in mid-rpm range
  • Possible rough idle or stalling
  • Increased fuel consumption

Common causes

  1. Output line shorted to ground Most likely
  2. Connector pins corroded - high contact resistance Less likely
  3. Harness chafing through insulation Less likely

How to diagnose P23F0

  1. Read every stored code with an OBD-II scanner. If misfire or fuel trim codes are there too, fix those first: they often cause this one.
  2. Inspect the parts involved: cam position signal b b2 output.
  3. Work through the causes above from most to least likely, cheapest checks first.
  4. Clear the code and drive a full drive cycle to confirm the repair held.

Reading the code

P
Powertrain
2
Generic (SAE) code
3F0
Specific fault

Questions drivers ask

Can I drive with code P23F0?

Usually yes for a short time, if the car drives normally, the temperature gauge reads normal and the check engine light is steady. If the light flashes, the engine loses power or overheats, or other warning lights come on, pull over and have it checked.

Can I fix P23F0 myself?

Often yes, with an OBD-II scanner and basic tools. Difficulty: easy. Start with the cheapest checks before replacing expensive parts.

This page is general information, not a substitute for a professional diagnosis. Repair costs are rough estimates for parts and labor and vary by vehicle and region.