OBD Guide
ENFRDEESPT

B2773

PTC Heater Circuit 1

B2773 is an OBD-II diagnostic trouble code meaning: PTC Heater Circuit 1. Common causes: open or short circuit in ptc heater circuit, ptc heater malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced interior heating efficiency
  • Engine preheating does not work
  • Check Engine light comes on

Causes

  • Open or short circuit in PTC heater circuit
  • PTC heater malfunction
  • Wiring Harness Problems
  • Control module malfunction

How to Fix

  1. Check PTC heater circuit continuity
  2. Check PTC heater resistance
  3. Inspect the wiring harness for damage
  4. Check control module

Related codes

B2774B2775B2776

FAQ

What does the B2773 code mean?

B2773 is an OBD-II diagnostic trouble code that indicates: PTC Heater Circuit 1

What causes a B2773 error code?

The most common causes of B2773 include: Open or short circuit in PTC heater circuit; PTC heater malfunction; Wiring Harness Problems; Control module malfunction.

How do I fix a B2773 diagnostic trouble code?

To fix B2773: Check PTC heater circuit continuity. Check PTC heater resistance. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2773?

Limited driving only, diagnose soon

How much does it cost to fix B2773?

The estimated repair cost for B2773 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat