6-5
UnclassifiedSensors
What This Code Means
TTMAP sensor malfunction; CKP sensor malfunction
Possible Causes
- •Short to ground in TTMAP sensor circuit
- •Open circuit/high resistance in TTMAP sensor circuit
- •TTMAP sensor voltage out of range
- •Implausible signal from TTMAP sensor
- •Internal fault within the TTMAP sensor
- •Faulty TTMAP sensor
- •Harness continuity issue to ground on TTMAP sensor conductors
- •Faulty CKP sensor
- •Harness continuity issue to ground on CKP sensor conductors
Suggested Actions
- 1Troubleshoot Throttle Position, Temperature and Manifold Air Pressure Sensor (TTMAP)
- 2Check for short to ground in TTMAP sensor circuit
- 3Check for open circuit/high resistance in TTMAP sensor circuit
- 4Check TTMAP sensor voltage
- 5Inspect TTMAP sensor signal for plausibility
- 6Replace TTMAP sensor
- 7Perform point to point resistance check on the harness
- 8Verify no continuity to ground on TTMAP sensor conductors
- 9Replace harness as needed
- 10Replace the CKP
- 11Perform a point to point resistance check on the harness
- 12Verify no continuity to ground on either conductor
ASK RUDY ABOUT THIS FAULT
Get a diagnosis walkthrough for 6-5 on your specific Generac unit — cited to the OEM manual, not a forum guess.
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