What Does C1895 Mean?
The air suspension module has detected a short-to-battery condition on the left rear height sensor signal circuit. A voltage source is feeding the signal wire, causing a constant high reading. The module cannot determine the actual LR ride height and may attempt to lower the rear left corner based on the false high reading.
Common Causes
40%
Chafed signal wire contacting a power feed in the rear harness bundle
30%
Internal sensor failure with signal shorted to 5V reference
20%
Contaminated or damaged connector bridging signal to power pins
10%
Module internal pull-up fault on the LR sensor input
Diagnostic Steps
1
Step 1: Disconnect the LR height sensor and measure signal pin voltage at the connector (key on). A drop to near 0V indicates the sensor is shorted internally.
2
Step 2: With sensor disconnected, check resistance from the signal wire to B+ and to the 5V reference wire to locate the short.
3
Step 3: Inspect the rear harness for abrasion, crushed sections, or aftermarket taps that could introduce voltage to the signal wire.
4
Step 4: Examine both ends of the connector for crossed, bent, or corroded pins.
5
Step 5: Replace the faulty component, verify proper voltage sweep, and clear codes.
Estimated Repair Cost
$80 - $450
Parts + labor, varies by vehicle and location
The air suspension module has detected a short-to-battery condition on the left rear height sensor signal circuit. A voltage source is feeding the signal wire, causing a constant high reading. The module cannot determine the actual LR ride height and may attempt to lower the rear left corner based o...
The most common cause of C1895 (Air Suspension LR Height Sensor Circuit Short To Battery) is: Chafed signal wire contacting a power feed in the rear harness bundle
Typical repair costs for C1895 range from $80 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
A high-voltage fault on the LR sensor can cause the system to over-deflate the left rear air spring, creating an asymmetric stance that degrades handling, especially in loaded conditions or during cornering.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1895 to identify the root cause.
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Quick Info
Category
Chassis
System
Air Suspension System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
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