OBD-II code · Network (extended)
U3500 Control Module Input Power A Circuit Range/Performance
Control Module Input Power A Circuit Range/Performance: the signal is implausible or outside the valid range.
Is it safe to drive with U3500?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyHigh resistance in supply path
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Module Power A, Power Wiring
Related codes
- U3504Control Module Input Power B Circuit Range/Performance
- U3508Control Module Input Power C Circuit Range/Performance
- U3034Communication Authentication Key/Certificate Missing/Invalid
- U3035Communication Authentication Signal Invalid Data
- U3036Communication Authentication Signal Performance
- U3501Control Module Input Power A Circuit Low
- U3502Control Module Input Power A Circuit High
- U3503Control Module Input Power A Circuit Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.