Rear Acceleration Sensor Malfunction
Table of contents
C1798 TOYOTA Possible Causes
- Faulty Rear Acceleration Sensor
- Rear Acceleration Sensor harness is open or shorted
- Rear Acceleration Sensor circuit poor electrical connection
- Faulty Suspension Control ECU
How do I fix code C1798 TOYOTA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the C1798 TOYOTA code
The cost of diagnosing the C1798 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C1798 TOYOTA Description
The acceleration sensor (up and down G sensor) detects the upward and downward acceleration of the vehicle and outputs it as a voltage to the Suspension Control ECU. Up and down G sensors are installed in 3 locations: 1) the Suspension Control ECU, 2) the driver side instrument panel, and 3) the passenger side instrument panel. Each up and down G sensor independently detects the upward and downward acceleration. During a test mode inspection, the Suspension Control ECU reads the fluctuations in the signal of each sensor. When the sensor cannot detect +/-1.96 m/s2 for 1 second or more during the test mode, the Diagnostic Trouble Code (DTC) is stored.