OBD Guide
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P053A

PCV Heater A Control Circuit /Open

P053A is an OBD-II diagnostic trouble code meaning: PCV Heater A Control Circuit /Open. Common causes: broken wire in the pcv heating element circuit, oxidation or damage to the heater connector. Estimated repair cost: $17–67.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–67 (est.)

Symptoms

  • Check Engine Light Illuminates
  • PCV valve freezing in cold weather
  • Increased oil consumption in cold weather
  • Oil deposits in the intake manifold
  • Unstable engine idling in winter

Causes

  • Broken wire in the PCV heating element circuit
  • Oxidation or damage to the heater connector
  • PCV valve heating element failure
  • Heating circuit relay or fuse malfunction
  • ECU malfunction (rare)

How to Fix

  1. Check the PCV heating circuit fuse according to the vehicle diagram
  2. Inspect the connector and wiring of the heating element for oxidation and breaks.
  3. Measure the resistance of the heating element (usually 5–20 Ohms)
  4. Check for power supply at the connector with the ignition on
  5. If a malfunction is detected, replace the heating element or PCV valve assembly
  6. Reset the error with a scanner and check that it does not reappear

Related codes

P053BP0171P0174P051B

Error P053A by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P053A code mean?

P053A is an OBD-II diagnostic trouble code that indicates: PCV Heater A Control Circuit /Open

What causes a P053A error code?

The most common causes of P053A include: Broken wire in the PCV heating element circuit; Oxidation or damage to the heater connector; PCV valve heating element failure; Heating circuit relay or fuse malfunction.

How do I fix a P053A diagnostic trouble code?

To fix P053A: Check the PCV heating circuit fuse according to the vehicle diagram. Inspect the connector and wiring of the heating element for oxidation and breaks.. Measure the resistance of the heating element (usually 5–20 Ohms). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P053A?

Yes, but get it checked soon

How much does it cost to fix P053A?

The estimated repair cost for P053A is $17–67. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat