OBD Guide
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P145E

PCV Heater Control 'B' Circuit

P145E is an OBD-II diagnostic trouble code meaning: PCV Heater Control 'B' Circuit. Common causes: open or short circuit in pcv heater circuit, pcv heating element malfunction. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine light comes on
  • Possible problems with crankcase ventilation in cold weather
  • Increased oil consumption (in rare cases)
  • Unstable engine operation at idle (if the system is heavily contaminated)

Causes

  • Open or short circuit in PCV heater circuit
  • PCV heating element malfunction
  • Problems with the relay or circuit fuse
  • Wiring harness damage
  • Malfunction of the engine control unit (rare)

How to Fix

  1. Check PCV heater circuit fuse and relay
  2. Diagnose the resistance of the heating element
  3. Check the integrity of wiring and connectors
  4. Replace PCV heating element if necessary
  5. Reset error code after repair

Related codes

P145FP145DP145C

FAQ

What does the P145E code mean?

P145E is an OBD-II diagnostic trouble code that indicates: PCV Heater Control 'B' Circuit

What causes a P145E error code?

The most common causes of P145E include: Open or short circuit in PCV heater circuit; PCV heating element malfunction; Problems with the relay or circuit fuse; Wiring harness damage.

How do I fix a P145E diagnostic trouble code?

To fix P145E: Check PCV heater circuit fuse and relay. Diagnose the resistance of the heating element. Check the integrity of wiring and connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P145E?

Yes, but get it checked soon

How much does it cost to fix P145E?

The estimated repair cost for P145E is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat