U1113
Lost A/C Pressure Message
U1113 is an OBD-II diagnostic trouble code meaning: Lost A/C Pressure Message. Common causes: open or short circuit in the pressure sensor circuit, faulty air conditioner pressure sensor. Estimated repair cost: $17–56.
Symptoms
- Air conditioner doesn't work
- Reduced cooling efficiency
- Hot air from deflectors
- The climate control system indicator is flashing
- Air conditioning compressor does not turn on
Causes
- Open or short circuit in the pressure sensor circuit
- Faulty air conditioner pressure sensor
- Problems with connectors or wiring harness
- Low refrigerant level in the system
- Engine control unit malfunction
How to Fix
- Check the refrigerant level in the system
- Diagnose the pressure sensor circuit for opens and short circuits
- Check sensor connectors and wiring harness
- Replace pressure sensor if necessary
- Scan the system for other errors
Related codes
FAQ
What does the U1113 code mean?
U1113 is an OBD-II diagnostic trouble code that indicates: Lost A/C Pressure Message
What causes a U1113 error code?
The most common causes of U1113 include: Open or short circuit in the pressure sensor circuit; Faulty air conditioner pressure sensor; Problems with connectors or wiring harness; Low refrigerant level in the system.
How do I fix a U1113 diagnostic trouble code?
To fix U1113: Check the refrigerant level in the system. Diagnose the pressure sensor circuit for opens and short circuits. Check sensor connectors and wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1113?
Yes, but get it checked soon
How much does it cost to fix U1113?
The estimated repair cost for U1113 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat