Chevrolet HHR U1928 Code:

OBD-II Diagnostic Network (U) Trouble Code

Trouble In Chevrolet HHR U1928 Possible Cause

The most common cause for this Chevrolet HHR U1928 type of failure is due to liquids spilled on the upshift/downshift switch. Open or shorted electrical wiring, damaged, corroded, or disconnected wiring or connectors are also a viable possibility.

Common Symptoms For Chevrolet HHR U1928

  1. Individual control module failure is rare but possible
  2. A suitable OBD-II scanner (or code reader) and a digital volt/ohmmeter will be most helpful in performing a successful diagnosis
  3. If the initial resistance is within specifications, leave the leads of the digital volt/ohmmeter connected and heat the resistor with a heat gun
  4. Check local, state, and federal laws before removing emission related components.

Similar Problems

IC Module 4X Ref Circuit Intermittent, No Pulses
Exhaust Gas Recirculation System Valve 1
Kick-Down Switch Failed Short

Chevrolet HHR U1928 Troubleshooting

Broken engine mountings can cause banging and graunching noises. There are two main types of mounting those centrally placed close to the bottom of the block and those higher up the block which mount on to the inner wings or chassis members. Chevrolet HHR U1928 OBD2 reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.

How to turn off Chevrolet HHR U1928 check engine light ?

There are two ways to turn off the check engine light:

A repair technician can do so once repairs have been made.
The OBD II can automatically turn it off when it fails to detect the problem after several diagnostic cycles.

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