OBD Guide
ENFRDEESPT

P1321

Cylinder 1 Oil Supply Solenoid Valve Switch ON Time Immeasurable

P1321 is an OBD-II diagnostic trouble code meaning: Cylinder 1 Oil Supply Solenoid Valve Switch ON Time Immeasurable. Common causes: oil supply solenoid malfunction, open or short circuit in wiring. Estimated repair cost: $17–56.

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

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Reduced engine power
  • Check Engine light comes on
  • Problems with the VVT system

Causes

  • Oil supply solenoid malfunction
  • Open or short circuit in wiring
  • Poor contact in solenoid connector
  • Engine control unit (ECU) malfunction
  • Low oil level or poor quality

How to Fix

  1. Check the oil level and condition
  2. Check the integrity of the solenoid wiring and connectors
  3. Check solenoid resistance
  4. Replace solenoid if necessary
  5. Check the operation of the VVT system

Related codes

P1320P1322P1323

Error P1321 by Vehicle Brand

BuickCadillacChevroletChryslerGMGMCOldsmobileSaturnVolkswagen

FAQ

What does the P1321 code mean?

P1321 is an OBD-II diagnostic trouble code that indicates: Cylinder 1 Oil Supply Solenoid Valve Switch ON Time Immeasurable

What causes a P1321 error code?

The most common causes of P1321 include: Oil supply solenoid malfunction; Open or short circuit in wiring; Poor contact in solenoid connector; Engine control unit (ECU) malfunction.

How do I fix a P1321 diagnostic trouble code?

To fix P1321: Check the oil level and condition. Check the integrity of the solenoid wiring and connectors. Check solenoid resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1321?

Yes, but get it checked soon

How much does it cost to fix P1321?

The estimated repair cost for P1321 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat