Right turn signal circuit reads low
What it means
B0527. Right turn signal circuit reads low. The body control module cannot light the right turn indicator and the body warning light comes on.. This Chevy-enhanced code applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.
Findings, check these first
- Failed right turn signal lamp bulb
- Right turn signal bulb socket corrosion
- Right turn signal lamp harness shorted to ground
- Poor electrical connection at the right turn signal lamp
- Faulty right turn signal output in the body control module
Standard procedure
- Confirm the code with a scan tool
- Inspect the right turn signal bulb and socket for damage
- Test the right turn signal supply circuit for a short to ground
- Command the right turn signal with the scan tool and watch the lamp
- Replace the right turn signal bulb only after circuit tests pass, then clear the code and retest
Look up another code
Press / to jump to the box. Chevy-enhanced powertrain, body, chassis and network codes.
Sources and review
Review: checked against the recorded source material.
- B0527 CHEVROLET Code: Meaning, Causes, and Symptoms | OBD2 Codes - OBD2 Codes
live reference page (obd2-codes.co)
Supports: CHEVROLET and GM-family meaning and likely causes for B0527
Fetched directly. B0527 reads "Right Turn Signal Circuit Low".
- Code B0527 meaning and causes | OBDII.pro
live reference page (obdii.pro)
Supports: independent corroboration of the GM meaning
Fetched directly. obdii.pro is a separate publisher and gives the GM meaning as: RH turn signal circuit low More details about the error B0527 and possible reasons for its occurrence.
Last updated 2026-10-10.
Report a correction for B0527. Include your vehicle, the issue and a source if you have one.